Looking for brass, bullets, dies for your reloading press or reloading tools? Shop Reloading
PLEASE NOTE: Most Orders Ship in 1-3 Business Days.
We don't sell primers or powder and we do not offer backorders on any item.
This Rosco 10.5" 300 Blackout 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! 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 the 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 Rosco set out to make these. Let's just say that Rosco doesn't like leaving things to chance.
Features:
Length: 10.5"
Weight: 21.4 oz
Material: 4150 CMV
Caliber: 300 BLK
Profile: Heavy
Twist: 1/7
Thread: 5/8 x 24
Gas Block Size: .750
Gas Length: Pistol
Barrel Crown: 11 Degree
Finish: Nitride
Manufacturer: Rosco
MPN: BL-105-HB-300BLK-7-P
Business Hours:
Monday - Friday 9-5 CST
Before calling please note:
1. We don't have any primers or powder
2. We don't manufacture ammunition or reload ammunition
3. Check the ship dates above. Business days are Mon-Friday. Saturday and Sunday don't count.
4. If you didn't receive a copy of your order please e-mail us. We are having difficulties delivering to comcast e-mail addresses.
5. We are currently 7 days behind on returning phone calls. Please e-mail if possible.
Phone: 512-827-8651
(please e-mail us for a faster response)