We use cookies to improve your website experience. There are duties that the FFL Dealer is required to do during the process which include a criminal and mental health background check through NICS. Firearms Safety Quick view . event : evt, Im thinki of pulling plug on the Glock and 3 lower deal and test them out. at atlantic tactical they ran a special fn 16.1 inch ar with a flat top for about a grand plus tax ,I bought three and outfitted different optics to match my shooting styles ,each holds an inch and a half at 300 yards ,now that's a deal worth getting.all but one got an acog .it got a vortex strike eagle 1x8 instead. Once shipped, your firearm will arrive at the FFL Dealer within 3-7 days business days. Sort by popularity Sort by average rating Sort by latest Sort by price: low to high Sort by price: high to low I would be careful about the way you say this, if your intentions are getting around an sbr tax stamp, your breaking the law, and that is how the law is wrote, you must build a pistol, from a reciver that has never been a rifle, does not matter what the new reciver that has never been a rifle is marked. I'm building my very first AR based on your website recommendations of the Aero Precision. A 1:8 twist rate, this is another option tailored to lighter bullets and not so much for suppressors. One of the many things they cover is the .300 BLK in uppers of all sizes, from 7.5-inch barrels all the way to 16-inch barrels, with every standard size in between. Barrel: Diamondback Barrels 300 Blackout, Pistol Length, 16 in., Heavy, 4150 CrMov, Black Nitride. Easier approval. Personalize your experience. Dumb question. What do you think about RADICAL FIREARMS TACTICAL ??? I'd like to suggest very decently priced and good quality uppers by Karri's Guns. I just got into shooting ar-15 and having fun with it. 1:8 Barrel twist on: function(evt, cb) { I just finished a build (kind of a Frankenbuild) with Mega Arms forged upper and lower, UTG Slim Pro handguard, and 16" Ballistic Advantage Hanson Series 1:8 barrel in QPQ finish. My recommendation to anyone entering the world of ar's, build a basic 5.56/.223 then after you are comfortable get a 300 blk upper. the upper no, the suppressor yes. I know this is about uppers but today they have a 5th gen glock 26 and 3 lowers for $599 if you wait and catch the uppers you want you can get 4 guns for under $1200 bucks and the quality of uppers have been great. Endeavour to always exceed mil-spec. Is it OK to mix the manufactures between up and lower? What an awesome site. Shows what you know or who's paying you to push their brand. The store will not work correctly in the case when cookies are disabled. $693.00 . In the first picture of this post of a few upper receivers y'all own, which upper receiver is the third one in from the left side? No hard credit inquires for Pre-Approval. Handgun Accessories Features. Quick view Out of stock. Were also sticking with direct impingement guns (normal). I was involved in DoD testing of Colt against 2 other competitors (that is all there was at the time). When you attach the upper to the lower, it should sound like an mp-5sda3 with a wet supressor. the company's FN-15 Tactical is offered in .300 BLK complete with the same combat trigger, cold-hammer-forged chrome-lined barrel, snappy trigger pull . Wth these groups of mid tier vs top tier are ridiculous. Tom. up to 6-9 months. Actually, that whole classification of brands is way off. Barrel: 10" 4150 Chrome-Moly, Melonite Coated. No additional charge for multiple firearms on an order. Thanks! A $16.95 handling fee will be charged per order. You are using an old version of a web browser that is no longer supported. Add to Cart. . Our Approach. Eric i always enjoy your articles but I dont know how lon its been since you got a palmetto state armory upper but I have ordered 3 in last 6 months using their deal of the day and they to me are better than most of the middle group you mentioned. Write a Review. A global health event combined with a US election year and civil unrest caused massive stockpiling, shortages in production, and panic buying that resulted in prices rising across the industry as supply plummeted and demand skyrocketed. window.mc4wp = window.mc4wp || { They are not top of the line so your mileage will/may vary. Diamondback Firearms .300 Blackout AR-15 Barrel Nitride - 8.5" View Details. Let us know in the comments below. Pick up your firearm from the FFL Dealer, who will need to do a criminal and mental health background check. I was weary of diamondback as theyre not known to make the greatest pistols, but Ive already put 1000rds through one and have never had an issue and its extremely accurate. Hey Darwin, no personal experience but I know they are very affordable. Do your shopping and, with Diamondback's prices, likely you'll come out ahead of what you'd spend on a complete upper. Your browsers UserAgent string has been modified and is invalid or does not match other characteristics of your request. Quick view Choose Options. Unless you are looking for a specific logo, custom serial number or a cool feature that a lower may have, all lowers are made by the same three or four companies before being sent to get the premium laden logo attached. Color. Thanks. Carbine length gas system and A2 flash hider. Forged Aluminum Lower Receiver. Might be a blessing letting them focus on keeping quality while building out company! gear. Visit our website today and browse through large selection of 300 blk uppers. The one drawback to Diamondback's 300 Blackout upper, no bolt-carrier group (BCG) or charging handle. Fees can vary so check with the FFL Dealer ahead of time to request a quote on the fees associated with your firearm transfer. Two other great budget uppers are diamondback and CBC industries. LAR-15M Complete Upper Halves .300 AAC Blackout. You have to be a great shooter or you have to put optic and go for targets at a longer range. The Diamondback DB15 offers high performance and precision in a durable, lightweight, and reliable AR15 rifle platform. That grabbed my attention. have issues. Semi-Automatic AR-15 Rifle. If you choose a dealer that is not on our preferred list, either you or the FFL Dealer will be required to submit a copy of the Federal Firearms License referencing your Cheaper Than Dirt! Do not,I repeat do not go with the Wylde as a first timer in ar's. I have been very impressed. Windham makes one of the best in my opinion obove DDF and a lot of over priced ar's. DB-380 Pistol .380 ACP 2.8in 6rd Black. Finish: Black Anodized Hardcoat. you a link to reset your password. Also it reinforces my opinion that I made a good decision in trusting YHM ;). 1x10.5 2x16.5s and an 18 Buy guns online from the best online gun store and get modern sporting rifles and other 5.56 NATO/.300 AAC Blackout rifles for sale from GrabAGun today! DD "Gateway" 9" AR-15 .300 Blackout Pistol Complete Upper W/: Ballistic Advantage and Phase5. Anyone who thinks Price equals quality is a dolt. Also comes in a pencil barrel(shown above). they arent nearly as good as their pistols. It is complete with a .300 Blackout bolt carrier group, forward assist, handguard, and a barrel. Whats your go-to upper? Hi, I'm Eric Hung and I got into guns when I was around 25 and started with YouTube videos, scouring forums, and eventually taking a bunch of classes. I became my group's "gun guy" and everyone who had questions came to me. Warranty Registration Again, tons of options, but Ive selected M-LOK handguards for you to be future-proof. on: November 01, 2017, 12:39:08 PM . So talk with the chamber expert in the shop when deciding which chamber to use/request. In Stock . Hopefully, youve found something in this list that appeals to you. Finally, these are the budget tier brands. Classes; Private Instruction; Calendar; ENTERTAIN; Member Reservations; More. Even today, they log more complaints about their uppers over And now I hope to answer some of yours! A suppressed m4 is ideal for home defense since Your not blowing out your neighbors eardrums ohh and the Katt with the super beard on Your Staff you may consider a charity Shave off and the proceeds go to shaving his beard. For an, at the time, $800 rifle. 1:8 RH twist rate. A stripped lower should always be classified as "other", it's the final assembly that determines rifle or pistol. Lots of owners will have several complete upper receivers, some with different length barrels, different calibers, or particular features . Primary Weapons Systems MK116 Piston Upper (16.1" 300BLK Barrel) Choose Options . The heavy hitters at the show will be quiet guys walking the aisles, with no tables. what in the world are you talking about with the 223 wylde stuff? LAR-15M Complete Upper Halves .350 Legend. I was able to get very tight groups at 100 yards and shot an 8 point buck with it last week. Check out all of our AR 15 300 aac blackout complete upper receivers for sale. (3) Why the continuing inclusion of quad rails, which are heavy, ungainly, and often have sharp edges? Other things such as handguards, front sight block (FSB), and barrel profiles are user preferences. Try Pay in 4 at 0% interest for purchases between $200 to $600. Find a FFL Dealer. And in our complete review with tons more video. If I miss that quarter at 200 yards I have 29 more rounds and my rifles not jamming. Im liking PSAs 18-inch rifle-length gas system for extra velocity and reduced recoil. Caliber does not matter on the lower receiver, but very much matters on the barrel. I have a DD and they not in that group but I have no problem taking them out plus it gives me little extra to put in optics. We prefer mid-length gas systems for 16-inch barrels since they allow a little more space for pressures to drop and therefore give a slightly softer shooting impulse. - Milspec- had one issued for 35 years! The PA-15 is a solid choice in almost any caliber as the upper and lower lockup is dialed-in. 2 models Aero Precision AR15 8in .300 Blackout Barrel Complete Upper Receiver (2 . the 16.5s and the 18 are 1 moa accurate to 300 yards with factory match ammo "But we recommend testing them thoroughly before you decide to use them for defensive purposes." Learn the 3 most popular shooting stances & more. MSRP: Your Price: $753.45. length of your choice 7.5 10.5 16.5 18 20 etc itll shoot 223 or 5.56. its not a custom wildcat cartridge lol. Word of caution. 2. AR-15 Bolt Carrier Group . Eric when you were in the military did you ever get told that if the round won't chamber hit the assist to make the problem worse. order number. Federal law requires firearms to be shipped to FFL Dealers. 1. DB10 .308 18 DIAMOND SERIES COMPLETE UPPER W/ 15 M-LOK ANTI ROTATION S RAIL, MIDNIGHT BRONZE $ 564.95 $ 480.21. I'm looking to build a 223 Wylde do you need a special upper for these or just the barrel and bolt carrier? Returns Terms & Conditions, Diamondback Firearms | 3400 Grissom Pkwy., Cocoa, FL. Caliber: 300 Blackout Barrel Length: 16" Capacity: 30+1 Safety: Manual Oal: 32.50"-35. . LAR-9M Complete Upper Halves .9mm Luger. .300 Blackout Complete Upper Assembly Specs: Caliber: .300 AAC Blackout; 10" Chrome Moly Barrel, Black Nitride Finish; Forged Aluminum A3 Flattop Forged Aluminum Upper . It's best to use 6.5 Grendel Uppers with your standard 5.56 magazine. Uppers For me, the best, constantly reliable, was the 5.56 military chamber. Bolt to bolt carrier precise, smooth, non wobbling interaction. Select Options. Call 800-963-7700 . I really like how it looks. And theres a BIG difference. These are our perceived top-tier brands that dont skimp but cost a little bit more. Select Options Item Added to Cart! Rating: Special Price $359.99 $519.99. Items 1-24 . I added them to my primary AR-15 article but forgot them in the upper assemblies one. Select a local Federal Firearms Licensed (FFL) Dealer that will accept the firearm and complete the transfer. Features include a complete upper, a 12 inch M-LOK handguard, an adjustable magpul MOE carbine stock, and a 30 round magazine. Aero Precision M4E1 Threaded 8" .300 Blackout Complete Upper Receiver w/ ATLAS R-ONE Handguard Anodized Black - $299.99 Aero Precision APAR700701M1: This complete upper includes our new ATLAS R-ONE Handguard! Other than it being 2" longer, I like the added accuracy it will provide for farther distance. . Forged 7075 T6 Aluminum A3 Flat Top Upper Receiver Forged 7075 T6 Aluminium Lower Receiver . and the Cheaper Than Dirt symbol are registered trademarks of Direct Investments LTD. America's Ultimate Shooting Sports Discounter. However, well still include some 14.5-inch barrel uppers with pinned and welded muzzle devices to meet length requirements. I guess Geissele gets left out for fairly obvious reasons. Unless you plan on shooting lots of rounds really quickly you won't really see a difference in groups. it must be shipped to an FFL Dealer in your state. will soon be arriving for you. Primary Weapons Systems. AR-15 Complete Uppers . The Diamondback DB15 YPB 300 Blackout Rifle Rifle is made entirely in the USA! 0 Review . We are your experts when it comes to all things AR-15 , AR-308 , AR 9mm , AK-47 and Sig MPX . caliber of your choice 5.56 7.62x39 .300 blk etc cnc billet upper receiver Uppers .. Midsouth has advertised them There are only three or four actual manufacturers of many of the upper parts listed. AR-10s at the time were relatively very expensive to own and reliability was considered an added bonus. Comes with a flash suppressor. The Mega receivers are absolutely tight and well finished. it won't let me edit, sorry. In Stock . The FFL Dealer will begin processing the shipment. 1:7 twist stainless steel barrel is perfect for precision shooting with heavier bullets. I have a CBC upper mounted to a Anderson lower excellent fit and my 16'' 1/7 twist 556 upper is as reliable and accurate as you can ask for regardless of the price at 200 yards I can shoot the cap off of a milk jug every shot it runs steel case tula ammo without an issue and brass runs great the customer service is prompt and they keep you informed on the status of your order unlike the horror stories I've read about from other companies I hope this helps more people decide to exercise they're 2nd amendment rights responsibly, Not a single punctuation mark. Any suggestion on how I can build a good rifle with sight with a budget of 2k. Drop in ready 300 blackout complete upper receivers available today. But dont worry; heres our guide for the Best Stripped Uppers for your build and how to put it all together: Upper Guide & Lower Guide. Upper: A3 Flattop Forged 7075 T-6 Aluminum. Getting overwhelmed with all the upper receivers out there? I guess some people have to justify what They paid to buy or build their AR. .223 Wylde chambering adds additional accuracy by having a smaller chamber throat compared to 5.56 but will still shoot both .223 and 5.56 NATO. Colt came in last in Hi Shane, we'll be testing some PSA uppers and barrels soon! Learn More. Recommend all of the above parts. Also no mention of Springfield or Patriot Ordinance Factory. Most lower end manufacturers are also good to go nowadays, youre not going to have the fit and finish, and nice features such as the more durable barrel, better treatment on the BCG etc but for most situations and most people it will do its job. Add to cart. I don't want to list my favorites after going through M's, AR's, and M's again since 1970! You show a PSA upper for $230.00 , then you are directed to PSA site and the upper is 3 times as much. Loaded with premium components and newly-made brass, you can't go wrong with a 20-round box or a 200-round case of these high-quality rounds. So a key component to getting a super- shoots where you think, never breaks gun, is to find the actual source of the critical component parts, like the barrel, or the matched, no slack, upper/lower assembly, and ask them, who uses their components. To find a list of FFL Dealers in your area area CLICK HERE. Its just not true. Mags are the same-the "dedicated .300"mags have a front rib that has been trimmed/molded down so long rounds won't nosedive on feed ramp.I've found Daniels mags don't have the rib. 3. Will sell with or without optic, light, sling, extra mags, ammo. XM15 bare bones lower is 350$ Rainier is top shelf as well. Everyone wants milspec, which is now M-Lok. Any $500 AR can throw a bullet a hundred yards, but few can cover a quarter at 200+. Teach With Us. Sub 1,000 rnds. All of the manufacturers we looked at in this article all make standard mil-spec uppers that can attach to any standard lower with no worries. Bolt to barrel extension precise, smooth, interaction. Diamondback Firearms Item Number: DB1721K001. They lost military contracts for a reason. The M-Lok free float rail does more than just add to the overall aesthetic appeal of this Trybe Defense barrel. All the info one should need. Upper Receiver: Forged 7075-T6 A3; Lower Receiver: Forged 7075-T6; Pistol Grip: Magpul MOE; Handguard: M-LOK; Flash . Diamondback Firearms sale of the year, March Mayhem Week 1 is now live with Rifle Uppers and Mags on our lowest price of the year . out of stock. The best rail design I've seen lately is the ALG Defense EMR v1, which is round-ish, light, smooth, and lets you attach M-Lok accessories anywhere you want. Hope to try out some FNH rifles soon! 833-496-6401; . We'll only use the information provided according to our privacy policy. Besides that beard can get stuck in machine tools, burned up by hot objects or firearms of open bolt designs -can be a liability-even for Pew Pew. JSE surplus is a great place for a large variety of complete uppers. Lightweight barrel with integrated brake, carbon fiber handguard, lightweight BCG, and more bring the entire gun to under 5 pounds. Your email address will not be published. Bolt Action .300 BLK Rifles. All FNH. Hello Eric I have two that work great. Hello Eric, I want to build a side charging 300 Blackout. We also carry 300 blackout kits, complete guns, and 300 blackout ammo. My friend bought an aero precision cause he seen a list somewhere that they were better than one of the DPMSs I own. Both are 16.5. If you have ever sat in front of the old Colt Hammer Forging barrel machine for an hourof havng your bones rattled, it gives perspective. will soon be arriving for you. Caliber. { Hard to take that list seriously with Anderson and FNH being in the same Tier! New Vortex Crossfire optic. . G19; . I really like the POF lowers, for attention to detail, and quality control, but only with a matched, non mil-spec, won't open like a clam, upper. Were working on adding more lightweight uppersbut heres our favorite so far. anything extra and your Diamondback Firearms DB15 rifle uses a gas-impingement system and high quality CNC machined components. Item Description; Additional Terms of Sale; Item Characteristics . Eric, Was that a byproduct of your experience with their products? Fees & Perks. Just something to be aware of. })(); Diamondback Firearms, LLC 2023. Hey Grayden, I'd say it's based on if you're looking at slightly more accuracy go for the wylde (if you're reloading, really make sure your rounds are in spec, I learned the hard way), but for general shooting go for the 5.56. BCM MK2 Standard 16" 300 BLACKOUT Upper Receiver Group w/ KMR-A15 Handguard. Fast & Free Shipping on Orders $99+ . Bottom of the barrel, lowest quality, minimal accuracy, must go bang, most of the time, sloppiest tolerances, no problem with parts wear out or breakage with constant depot, or armory level care and maintenance. The FFL Dealer is in business to make a profit and your internet purchase may be viewed as competition to their retail business. Primary weapon systems* Hi William, have you checked out my AR-15 upgrades post? order number. From raw materials to finished productPSA does it all in-house, so thats why their prices are so low. The faster he can make it go click bang, the more he makes! I believe FNH is actually superior to Colt, but definitely not in a lower tier. 223 Wylde. Ive never personally shot a CBC upper but from the reviews they get they seem pretty nice. It ate/eats anything. This upper comes with a10.3-inch government profile, 1:7 twist, carbine length gas system, and flash suppressor. Colona, Il. I soaked up as much information as I could online, at competitions, and from tinkering in my workshop. Both start around $200 with a large variety of uppers on both websites. Ghost Firearms Elite 16" Upper .300 Blackout - Black. And the shell casing is 1.368 or 34.7mm long. Larue is amazing. 8.3" .300 Blackout BA Hanson Pistol Length Premium W/7" AR15 ATLAS R-One M-LOK Handguard Complete Upper . Firearms are only available for purchase online. Hi Eric. Radian Model 1 Complete Upper. Shopping with us is absolutely safe - you never have to worry about credit card safety when shopping here 2023 Copyright, entire contents by CTD, Inc. Cheaper Than Dirt! Just pm me with questions but if not serious don't waste time please. Emailed them , but haven't received an email back. Just personal experiencethey work fine but nothing to write home about. 3400 Grissom Pkwy, Cocoa, FL 32926, United States, SIG Sauer Romeo5 1x20mm Compact Red Dot Sight, SIG Sauer Romeo5 Red Dot & Juliet3 Magnifier Combo, I have read and agree to the terms & conditions. Colors: Black with Red Accents & Midnight Bronze. For Parents. Anderson over Bushmaster? $674.99 $389.99 Sale. I see guys all the time waste time and money building a pretty gun that doesn't work or shoot for schitt. RAW15 300 BLACKOUT PISTOL W/ 10.5" BARREL & 10 M-LOK RAIL. It may just be us mechanical engineers that want real data in the form of exactly what materials, coatings, design features, tolerances and dimensions, surface finish, heat treatments, it is that makes one widget better than another. I want you, the future buyer, to become a well educated, well informed, conscious, buyer, so you can pay it forward. Barrel precisely, and correctly positioned in the barrel extension. Thanks for your site. or have them made under contract for them? Approvals up to $10,000. Caliber: 300 AAC. } All. Handguards Barrel Length. I know chrome lined barrels are generally less accurate than their stainless steel counterparts, but Im looking for an 18in chrome lined barrel so I don't have to worry about corrosion. You may choose an FFL Dealer from our preferred listing or you may find a dealer in your area. Here are some of the reasons: Were going to presuppose that you already know some stuff about AR-15s, such as the different barrel lengths, gas systems, and BCGs. Four Payments, no interest for purchases between $200 to $600. We will verify the FFL license and also make the FFL Dealer aware that an order from Cheaper Than Dirt! i have 5: Barrel Twist Rate: 1:8. It means they dont understand the firearm, the different manufacturers or their designs or end goals (reliability/ accuracy). Sort By: Show: Product Compare (0) $259.95 $449.95. Out of Stock . $891 even gets you cerokote, their MBTrigger. Hey Thomas, I haven't owned any AR Stoner stuff but I know they are the budget in-house brand for Midway. Multiple outings showed this be a solid v. (BTSeenT). Neither of which are a bottom tier IMO. I also must take exception to your notion that Ruger or Smith and Wesson are less "top tier" than Colt or the other manufacturers you list as top. Yeah I'd say their top teir indeed. This guy is clearly an idiotSince when is RRA low tier quality? Type your email address and well send it shoots smoother and tends to be more reliable for extraction. . So all in all, I'm very impressed with the barrel that you get with the DB15 because even though it's an . Start your build off right with a 300 blackout upper from Palmetto State Armory. See Price on Optics Planet. LAR-9M 9mm Uppers. . We use cookies to improve your website experience. Agreed. Probably missing some accessories, such as a free-floating barrel. For example a 200 round box of 5.56 used to cost around $50, now it could be several hundred depending on the brand and availability, Under every link tab is the disclaimer: Prices accurate at time of writing. The password should contain at least 8 characters with at least one number or special character. Agree 100% late reading this but Ive bought 3 PSA uppers in last 3 months and all were the freedom with blemish on them and most cant find the blemish its usually a little color difference or paint chip on the rail. For the best experience on our site, be sure to turn on Javascript in your browser. Beast of a build I'll tell you what. together, assembled, yes. You should be able to buy just the upper receiver from them too. Add To Cart. Trigger: CMC 2.5 lb single stage trigger. Add To Compare . Diamondback Firearms Item Number: DB15CCMLU300BFB, Forged Aluminum A3 Flattop Upper Receiver, A3 Flattop Forged Aluminum Upper Receiver. Lower: Forged 7075 T-6 Aluminum [Diamondback Standard] Handguard: 12 in. Rating: Special Price $369.99 $509.99. Add to Cart for best price. (2) Since "USSOCOM Selects M-Lok For Weapon Programs" (google it), the KeyMod platform is pretty much dead. Known for amazing customer service and fast shipping. The flagship rifle/upper from the renowned barrel manufacturer is the Faxon ION. For the complete aero precision upper do you recommend the pencil profile or m4 profile? I think you would like it! The Diamondback,2- DPMS, and Spikes Tactical were fully assembled The ar10 I built with a polymer lower with a Delta Team Tactical upper and an ar15 polymer lower with Ar15Tac.com upper. The critical components are- matched upper/lower sets that DO NOT open like a mil-spec hinge. I don't understand how you could possibly have Stag and Aero Precision in different tiers. 90 percent of the stuff on this list is the same. Barrels 16" Chrome Moly Steel Barrel, Black Nitride Finish. BCM is good shit and imo deserves the higher tier, but their difference between PSA is more in fit and finish vs. actual performance. With every item the article talks about, there is a disclaimer that says "Prices accurate at time of writing." Diamondback Firearms Item Number: DB1721K001, 5.56x45mm NATO (also accepts .223 Remington), 16" Chrome Moly Steel Barrel, Black Nitride Finish, Forged Aluminum A3 Flattop Upper Receiver, A3 Flattop Forged Aluminum Upper Receiver. I may earn a small part of the sale from links to any products or services on this site. Trigger: CMC 2.5 lb single stage trigger. If youre shooting mostly benchyou can opt for the 20-inch barrel. Firearm transfer must be the actual transferee/buyer. The reason why is because an AR-15 chambered in .223 Remington cannot safely handle the pressure of 5.56 rounds. Both perform as expected Check out our article on the Best Left-Handed Rifles & Parts. Add To Compare . Steve Ostrem goes over the proces of changing a .223/5.56 AR-15 to 300 Blackout by simply changing the barrel. Add to Cart. Chances are you already have a complete AR-15 rifle or at least the serialized complete lower. You'll now receive newsletters of our best articles on techniques, The FFL Dealer is in business to make a profit and your internet purchase may be viewed as competition to their retail business. Not sure why everyone thinks Colt products BCM. UPC 810035751590. We already have an account registered for email address Set Descending Direction View as Grid List ; 8" .300 . Working with a budget but need something that will always go bang and hit its target? I prefer mid-length gas system. Diamondback Firearms creates practical firearms that are built to last. Shoot a large variety of grain weights with exceptionally well performance with subsonic ammo and suppressors. Diamondback DB15300BGB 300 Blackout 15ML AR-15 Rifle, Semi Auto, 16" BBL, Magpul Furniture,15" M LOK Rail, Black/GLD 30 Round.