Rosco Bloodline 8.2" .300 Blackout, 1:7T, Pistol Gas, 4150 CrMoV,
.750" Gas Block Journal, 5/8x24, Nitride Barrel
General Barrel Info: The barrel on an AR-15 originally operates under a 'gas impingement' system' by tapping gas off of the barrel and cycling it back through the gas system to assist the bolt carrier in unlocking and extracting the spent cartridge. AR-15 Barrels come in four different specifications for gas systems, Pistol, Carbine, Mid-Length, and Rifle. AR-15 Barrels vary between profiles as well as from Government, to Heavy, and Slim. Thanks to the modularity of AR-15, you can choose different calibers starting with the barrel, each with its specific twist rates. Choosing your barrel for your next AR-15 build has never been easier.
About This Barrel: This Rosco 8.2â€ 300 Blackout Bloodline Barrel is designed for SBR and Pistol to use in conjunction with suppressors. Rosco Manufacturing has gone to extreme lengths to ensure that this is a quality barrel. They have received input from some of the original creators of the .300 Blackout caliber to ensure it will be suppressor friendly and accurate. You know this barrel is tough because it is made from 4150 CMV and has a deep black nitride finish. It operates on a Pistol gas system and has a 1:7 twist rate. This barrel provides the flexibility of a compact firearm without sacrificing performance.
About the Profile: H-Bar - A heavy barrel adds a lot of weight to the rifle but a rifle thus equipped is more accurate than a rifle with a normal barrel because a heavy barrel heats up much more slowly than a normal barrel. With more material added, a heavy barrel by design is structurally stronger and more accurate.
Barrel Classification: Rifle
Length: This Barrel is designated as a rifle barrel with an overall 8.2" length.
Caliber: .300BLK - This barrel is chambered in .300 Blackout, a modern intermediate rifle cartridge developed for reliability under sub-sonic and super loads through a suppressed or unsuppressed barrel configuration. .300 Blackout is the Western counterpart to Russian 9x39 Rifle Cartridge. .300 Blackout is an ideal cartridge for hog hunting, shooting suppressed with subsonic ammunition, and home defense due to improved stopping power.
Material: 4150 CrMoV - Chrome-Moly Vanadium, or simply "CMV", is the official mil-spec gun steel developed by Colt Firearms for the military-issued M16 and M4. It contains the same elements as 4150 steel. It also contains Vanadium. Vanadium significantly increases the strength, hardness, and high-temperature stability of the steel.
Finish: Nitride - Nitriding is a process during manufacturing that diffuses nitrogen into the steel to make a case-hardened surface for improved resistance and strength. A Nitrided barrel typically has a gloss black texture.
Thread Pitch: 5/8x24 - 5/8x24 Threads are commonly found on barrels chambered in .30 Cal and up. Usually .308 Win, .300BLK, 6.5 Grendel, 6.5 Creedmoor, and 7.62x39. Muzzle Devices such as flash hiders, blast cans, and compensators will work with this barrel.
Model: Bloodline 8.2" .300 Blackout, 1:7T, Pistol Gas, 4150 CrMoV, .750" Gas Block Journal, 5/8x24, Nitride
Caliber: .300 AAC BLK
Handguard Compatibility: Freefloat
Gas Block Shelf: 0.75
Gas Length: Pistol
Twist Rate: 1:7T
Material: 4150 Chrome Moly Vanadium
Thread Pitch: 5/8x24
Barrel Extension Finish: Nitride
To view the most up-to-date shipping times Click HERE. To view Warranty, Returns, Terms & Restrictions Click HERE.