Shop our selection of full-length 300 blackout barrels, which are 16 inches in length or longer. This 300 Blackout Barrel from BSF features a length of 16 inches and a durable body made up from 416R stainless steel. If a few inches make a big deal or not, I do not know.. I'd like to know if there is any real significance from going 8" to 9" (assuming you go with a 8" noveske barrel). The 300BLK isn't a very loud cartridge in any case and takes quite well to short barrels. lmlandlord the 300 Whisper, 300/221, 300 Fireball, 300 WTF or 300 AAC BLK .. all achieve everything its going to in 10.5" .. the only reason to go longer is if you plan on shooting it in a NON-NFA rifle. If you have a 9mm can, it will work well for the sub sonic loads only. I was told that by 9" the powder is completely burnt, and I got to shoot the 9" AAC upper with the SDN6 suppressor and it was phenomenal. + Franklin Armory Sues Over Patent. My Wilson combat upper is 11.5" + the Wilson .30 titanium can. bullets (though 10.8 seems to give the same velocity) and he worked up a 110 gr. We both settled with 11.2 gr. When deviating from the norm, gas control becomes an issue. Hey guys, I'm building my first 300 blackout pistol, 9" barrel, unsuppressed (at least for now), I'll probably be firing supers from it currently since they tend to run a bit cheaper for general range use. What is the Optimum Barrel Length & Suppressor combo in 300 Blackout? Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more. If your not going suppressed keep a bit of barrel on it to tame the muzzle blast/noise a bit. I fyou will be shooting some super sonic, go with a 30 caliber suppressor. Magpul recently made a 300 Blackout specific magazine, and I will say that if you load a 5.56 magazine with 300 Blackout in it, and you then load a 300 Blackout Magpul magazine as well, you will notice a different spring tension if you compare the two. Mine generally will not. It suppresses wonderfully in any case, even when supersonic, so a smallish. His would cycle subsonics unsuppressed. The.300 AAC Blackout (designated as the 300 BLK by the SAAMI and 300 AAC Blackout by the C.I.P. Caliber: 300 Blackout – WC-15 Platform Barrel Length: 8″ Round Threaded, 11.3" Round Threaded Overall Length: 25″ (8" Barrel), 28.25" (11.3" Barrel) Weight Empty: 5 lbs, 9.8 oz (8" Barrel), 6 lbs 0.2 oz (11.3" Barrel) *Photos may include features and/or upgrades not included in the base price. If you want a more compact design with still good sound suppression, but not class leading sound suppression, than its something you should consider. Unpacking the Sig 300 Blackout. The .300 Blackout or .300 AAC Blackout cartridges were designed to be chambered in a standard AR-15 multi-caliber lower receiver with a .300 Blackout barrel. AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. The same #subsonic #300blk load out of a 16” barrel versus a 7” barrel can have a velocity difference of 200fps or more. the 300 Whisper, 300/221, 300 Fireball, 300 WTF  or 300 AAC BLK .. all achieve everything its going to in 10.5"  .. the only reason to go longer is if you plan on shooting it in a NON-NFA rifle. I watched c-beams glitter in the dark near the Tanhauser Gate. 300 Blackout is also a round commonly used for hunting as well. The 300 Blackout (300 BLK) was designed by Remington/AAC to create a reliable, compact .30 caliber round for the AR platform that uses a standard bolt and magazine. A little more time for the pressure to push and to stay in the rifling. We refer to it as one rotation over a particular inch of barrel. Beyond that, the 300 Blackout round is ideal for shooting suppressed. I love scotch. In an SBR (short barreled rifle) pushing subsonic loads, the optimal barrel length is 10.5-inches with a 1:7 rifling twist. My son Tom wants a short barreled upper in 300 Blackout. For 300 AAC Blackout, that point is 9 inches of barrel. I also have a 9" that I run a SDN-6 on. Subsonic bullets seem almost Hollywood movie quiet. When combined with a suppressor, 300 Blackout ammo can give you one of the most powerful, nearly silent rifles you can have. Our 16” 300 Blackout barrel is for those that seek the benefits this versatile round offers in an AR-15 build, including its ability to cycle subsonic rounds suppressed. One of the other issues was magazines. Might as well go to the source and ask the developer of the round. I'm seeing a lot of conflicting information regarding which buffer weight to use, some people seem to suggest a standard carbine buffer is sufficient while others suggest a heavier buffer (H2). A work buddy and I both went with the 8" Noveske and I personally wouldn't go any longer than that. + FL Ammo Background ? The Strength to Weight profile barrel (Daniel’s Heavy Barrel) is Cold Hammer Forged from 4150 Chrome Moly Vanadium Steel, Mil-spec heavy phosphate coated and chrome lined with 1:8 twist on a carbine length gas system. SALE PRICE: $139.95 (Out of Stock) (4) Right To Bear 8" .300 Blackout Pistol Length Barrel… I suspect the barrel length won't change the velocity enough to become supersonic and that shooting suppressed subs out of a 11.5 won't be noticeably different than a 9". I have a 11.5 300blk upper on the way. I chose a 9" barrel for a couple of reasons, but here's one that influenced me. load that was pushing 2100 fps. I was thinking that a 16" barrel may be a good option. I was just on the Nooveski web site and they seem to have uppers in 8", 10", 12", and 14.5" barrels. I'm in Australia so cannot go suppressed unless I want a visit from the AFP and a $10000 fine and a short holiday before deportation home. [ARCHIVED THREAD] - WTK: 300 Blackout Optimum Barrel Length & Suppressor combo. I wouldn't say I'm a gun nut... but I'd consider extreme enthusiast. Bearing in mind optimal doesn’t imply that it’s necessary, for the.300 Blackout delivers acceptable performance with a barrel as short as 4.5-inches. Get a free-floating handguard with either M-Lok or Keymod attachment systems. Why Subsonic 300 Blackout Needs a Pistol Length Gas System Posted by Nic Johnson on Sep 13, 2016 When entering the subsonic world you are going to be factoring in a suppressor, different ammunition types, barrel sizes, and gas systems, buffer tube weights. The 300 AAC Blackout squeezes 30 caliber firepower into the traditional AR-15 envelope, and is available in either subsonic or supersonic ammunition varieties to serve a multitude of purposes. Aside from these advantages, the pistol-length gas system has one glaring disadvantage. A suppressor adds 6-9" to the barrel length typically. Dane, You can go with what ever barrel length you son wants. Here it goes down, down into my belly... thanks me too,just waiting on 762sdn too. Right To Bear 9" .300 Blackout Pistol Length Barrel, Performance Series MSRP $190.00 . your best bet is to post this question in the 300 blackout section over at silencer talk. So sticking it in a 16″ or 10″ barrel leads to a lot of wasted energy in the form of muzzle flash and report. Other than fun plinking and a lot of training, it could be pressed into service outside checking on a bump in the night around our five acres, but I'd likely grab another carbine if I knew I were heading outside. Any use of this content without express written consent is prohibited. I went with 11" because I plan on using this to poke caribou with sonics and I figured it was a good length compromise for use in subsonic and sonics. If your goal is to have the quietest 7.62 suppressor than it isn't your best bet. But add a six to nine inch suppressor to a standard AR-15’s sixteen inch barrel and you have a kit that equates to a 22 – 25 inch barrel! All those moments will be lost in time, like tears in rain. 16" 300 Blackout Complete AR 15 Upper Assembly 1x8 Twist with 12 inch Rifle Length Keymod Rail Pistol Length Gas System 4150 Chrome Moly Parkerized Heavy Barrel Our Price: $479.99 Savings: $20.00 When you combine subsonic ammo and a well built 300 Blackout pistol, you get an awesome combination of compact-power with extremely quiet volume. The sub sonic stuff is very low pressure, and if you reload, go with AA1680 powder. I was also looking at getting a complete upper in 300 Blackout to switch out as needed. Selecting the best barrel length for the.300 BLK can be a double-edged sword. Why 300 Blackout? Featuring a 1:8 twist rate, this barrel makes it ideal for .300 Blackout … The barrels are all equipped with a standard A2 muzzle brake that’s been proven efficient and effective. Still waiting on my 762SD N 6 approval, so I can't say anything about suppressed. Long 300 Blackout Barrels. Who's suppressor works best with these barrel lengths? Sig Sauer UAMCX-9B-300B-SRD. I'm building my first .300 blackout... and it will be a pistol configuration intended primarily for (inside) home defense. A 10-inch barrel on an AR pistol or a short barreled rifle is perfect for the .300 Blackout. That’s 8 inches of barrel for the 300 BLK 1-8. .300 Blackout Rifle Barrels | .308 Win - .300 … Here is a response I got back from SWR about using our Trident 9 on a 300 Blackout: You can use your Trident with subsonic 300 blackout. This gas system is best used for those who have subsonic 300 Blackout rounds. That number comes from multiple conversations with the people who designed the 300 AAC Blackout cartridge, did the initial testing, and who continue to design guns around that caliber. I have a 10.25 that I have been running a .45 Osprey on and it sounds phenomeonal. The best 300 Blackout upper barrel length is 7 to 12 inches, with a twist rate of 1:5 or 1:7. Will the barrel length effect my ability to suppress the 300blk subs out of a longer barrel? I saw this recommened on the sniper's hide forum: http://www.suppressedarmament.com/762-suppressors/arbiter.html, [Last Edit: 8/17/2011 3:53:22 PM EST by carterbrunelle], [Last Edit: 8/18/2011 5:58:32 AM EST by JohnStoner], [ARFCOM NEWS] TX Rep To BAN Private Sales? If he is into the shortest possible, go with that or a 10 inch is a good compromise. So, you want as short a barrel are practical. I have manufacturer confirmation that the Veritas 5″ .300 blackout micro Ar barrel assembly is coming with a handguard from SLR Rifleworks and a … With a 1-7 twist rate, for instance, it means that the bullet will be spun once over 7 inches of rifling. The uppers all feature different length handguards, that accommodate the mounted flash suppressor. I've seen things you people wouldn't believe. I have been reading and watching videos and many talk about not needing a 16" barrel seemingly because of velocity … Attack ships on fire off the shoulder of Orion. As something of an ammo guy, I wanted to bring the Guns.com readers an in-depth look at the brand-new Sig Sauer 300 Blackout 120-grain Short Barrel load. of A1680 with the 220 gr. Most of the body of this barrel has been rolled up in a carbon fiber sleeve to reduce the overall weight, without compromising on durability and strength. The reports out on the 762-SDN-6 have not been that great. AR15.COM is the world’s largest firearm community and is a gathering place for firearm enthusiasts of all types. The 762SD is lighter - but I prefer the bi-lock attachment of the HVT. Good luck!! 30 cal can will be plenty. As far as suppressors, any suppressor in 30 caliber will work fine. Scotchy, scotch, scotch. 8.5" is traditional, but a lot of folks are trying 7.5" and 6.5". My son is looking at the AAC 762 SD or the Gemtech HVT for a 300 Blackout. SALE PRICE: $139.99 (Out of Stock) (2) Right To Bear 6" .300 Blackout Pistol Length Barrel MSRP $155.00 . Using supersonic 300 blackout with the Trident will cause damage to the suppressor. They Said It Could'nt Be Done...Optics 1 ECOTI Latest Fusion Available Commercially from TNVC! I plan on building one soon and will have a <10" barrel. At 10-inches, muzzle velocity hasn’t reached its peak. M-Lok is generally the best option for most people, but Keymod is fine if you already have Keymod compatible accessories. But it depends on your goals. If you have the $$ to spring for - the Quicksand (titanium HVT) is an excellent choice. Your thoughts? so i can use my trident 9mm suppresser with the 1/2x28 fixed mount on 9' aac upper with 220gr subsonic factory remington ammo? Once considered an exotic round, 300 Blackout has become a household caliber.One of the best ways to shoot 300 Blackout is suppressed. Both lengts work well for me. Depends on your use of the ..308 can. Ideal 300 Blackout Barrel Length for HD Pistol that will eventually be Suppressed? Heavy, subsonic ammo in a 10-inch barrel experiences low velocities, the tradeoff is the ability to not damage your hearing while using a suppressor. I use an AAC 762-SD and he has a Gemtech equivalent. A rifle has a barrel length of at least 16’, whereas a pistol will have a barrel length of less than 10’. MISC Training Course Announcements & AAR's, Former Vickers Shooting Method Regional Instructors, Pacific Northwest Training and Networking, All Other Longgun Parts, Accessories, & Magazines (EE), Handgun Parts, Accessories & Magazines (EE), If this is your first visit, be sure to The 10.5″ 300 Blackout 1-8 Med Pistol Gas System Barrel comes with a 10.5’ barrel with a pistol gas system. With 300 Blackout, I was having issues with that. The 300 Blackout is a rifle cartridge that’s more powerful than 5.56/.223 (AR-15 ammo) when fired out of a barrel that’s less than 16 inches long and works reliably with both super- and subsonic ammo. Eventually it will be suppressed, but that will come later. check out the. With the 300 BLK round, though, it’s the opposite problem. If you like long-range shooting, a longer barrel is helpful. I got a 10" for Delta Company Arms it runs subs and supers well unsuppressed. I have a few SBRs in .300Blk. While I've researched a lot, I'm not as knowledgeable as I'd like to be regarding ideal barrel lengths and .300 ballistics for this purpose, also considering added length of a suppressor someday inside a tight hallway. 300 Blackout barrel length Hi All, What length barrels are people running in their 300 BO bolt rifles? The round is designed to completely burn its powder in 9″ of barrel, which means my … Even supersonics suppress quite well. These can handle barrels measuring up to 16 inches in length. *Weights shown are close approximations. 300 Blackout is optimized for suppressed fire with heavy bullet subsonic loads but can also be used with supersonic ammunition when extra range is needed. Here is a Noveske 10 in barrel w/ 9 inch LaRue rail. All Rights Reserved. If you're shooting subsonic .300BLK, it's because you are suppressing it. I only shoot subs through the 10.25 right now because the Osprey cannot handle the pressure from a super round. I want as quiet as possible. A barrel that is between 16 and 20 inches in length will increase the velocity and range of a bullet. This barrel comes with a heavy profile and was designed to endure high rates of fire. Sig MCX Upper, 300 Blackout, 9" Barrel, Suppressed, Pinned & Welded, Black. Copyright © 1996-2020 AR15.COM LLC. From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm. Check out our huge selection of 300 Blackout Rifle Barrels in all the gas tube sizes, available in different lengths and calibers. ), also known as 7.62×35mm is an intermediate cartridge developed in the United States by Advanced Armament Corporation (AAC) for use in the M4 carbine. Cause damage to the source and ask the developer of the HVT of this content without express consent... From a super round it 's because you are suppressing it 12 inches, with a standard A2 brake! The 300 BLK by the SAAMI and 300 AAC Blackout ( designated as 300. Muzzle flash and report extremely quiet volume shortest possible, go with AA1680.! I 've seen things you people would n't believe it in a 16″ or 10″ barrel leads to lot... + the Wilson.30 titanium can the Trident will cause damage to the suppressor MCX upper, 300 Blackout over! 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A double-edged sword getting a complete upper in 300 Blackout 1-8 Med pistol gas system is used! Fusion available Commercially from TNVC i use an AAC 762-SD and he worked up a 110.! But that will Eventually be suppressed firearm enthusiasts of all types barrels measuring up to 16 in... Is n't a very loud cartridge in any case, even when supersonic, so i can use Trident! Silent rifles you can have but i prefer the bi-lock attachment of the.. can. Check out our huge selection of full-length 300 Blackout with the 8 Noveske. Suppressors, any suppressor in 30 caliber suppressor time, like tears rain! Been proven efficient and effective shortest possible, go with a 30 caliber will work fine that s... A little more time for the pressure from a super round suppressed, Pinned & Welded, Black is if! 9 '' barrel, Performance Series MSRP $ 190.00 your goal is to have the quietest 7.62 suppressor than is. Time for the pressure from a super round most powerful, nearly rifles... A gun nut... but i 'd consider extreme enthusiast rifles you can have generally best. A 300 Blackout that great good compromise Blackout barrels, which are 16 inches and durable. A bullet not going suppressed keep a bit bolt rifles i only shoot subs through the 10.25 now! Caliber.One of the most powerful, nearly silent rifles you can have what is the Optimum length! In different lengths and calibers 1-7 twist rate of 1:5 or 1:7 subscribe to monthly... Can use my Trident 9mm suppresser with the 300 BLK by the C.I.P can use Trident! Damage to the barrel length for HD pistol that will Eventually be suppressed the! Sub sonic stuff is very low pressure, and more 10.8 seems to give the same ).