Rosco Manufacturing Bloodline 10.5" 300 BLK Heavy 1:7 Twist Black Nitride Pistol Barrel - BL-105-HB-300BLK-7-P
Out of stock
This Rosco 10.5 300 Blackout (300 BLK) barrel was designed for SBR and Pistol use in conjunction with suppressors. The 10.5 300 Blackout Rosco barrel was made to be a direct replacement for any MK 18 platforms that are currently in 5.56 NATO. The 10.5 barrel is also perfect for carbines which require a slightly longer rail in order to run PEQ-15’s, D-BAL (series), or any laser aiming devices comfortably. ALL NFA RULES APPLY!
Our Rosco 300 Blackout barrels were created by using input from SOCOM end users and some of the original creators of this caliber. Every barrel was designed to optimize the original role for the 300 Blackout; to be suppressor friendly and accurate. It is our goal to get you the performance that you seek out of these AR15 barrels when running sub-sonic ammo or supersonic ammo (depending on barrel length). Twist rates, gas port diameters, and lengths have all been taken into account when we set out to make these. Let’s just say that we don’t like leaving things to chance.
Specifications:.
- Barrel Length: 10.5
- Barrel Weight: 21.4 oz
- Barrel Material: 4150 CMV
- Barrel Caliber: 300 BLK
- Barrel Profile: Heavy
- Twist: 1:7
- Barrel Thread: 5/8 x 24
- Gas Block Size: .750
- Gas System Length: Pistol
- Barrel Crown: 11 Degree
- Barrel Finish: Nitride
- Barrel Extension Finish: Nitride
| Weight | 32 oz |
|---|---|
| Dimensions | 12.5 × 3 × 3 in |
| Finish | Nitride / Melonite |
| Barrel Profile | Heavy |
| Cartridge Compatibility | 300 BLK |
| Gas Block Journal | 0.75 |
| Barrel Length | 10.5 |
| Gas System Length | Pistol |
| Platform | AR-15 |
| Twist Rate | 1-8 |
| Muzzle Thread Pattern | 5/8×24 |
| MPN | BL-105-HB-300BLK-7-P |
| UPC | 4649 |
Compliance
NFA (National Firearms Act) compliance is crucial for legal ownership and transfer of regulated firearms and accessories like short-barreled rifles, suppressors, and certain types of ammunition, ensuring adherence to federal regulations to avoid legal penalties and ensure responsible firearm ownership.
Customer Reviews
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US
Looks nice!
Haven’t test fire yet but this barrel looks really nice a solid, happy with the purchased.
US300 BLKOUT
Good looking barrel have not shot it yet waiting on more parts. will up date
USExcellent barrel
Easy installation. Great accuracy. Great value
United StatesMaybe a fluke? But I have terrible accuracy
Visual quality of the barrel is great, however after about 100 rounds the accuracy has been HORRIBLE, I have double-checked everything else, including barrel nut torque, cleaned the barrel, tried bedding the barrel. I am still going to do a few other things to troubleshoot the accuracy, but so far I'm getting no better than 5MOA with it with any ammo. This is supposed to be my hunting rifle, and it has been not a great experience so far. If I am able to troubleshoot it and get it shooting better, I'll update my review.
