Our Rosco 300 Blackout barrels were created by using input from SOCOM end users and some of the original creators of the 300 Blackout caliber. Every barrel was designed to optimize the original role for this caliber; to be suppressor friendly and accurate. It is our goal to get you the performance that you seek out of these 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.
|Barrel Weight||30.01 Oz|
|Barrel Material||4150 CMV|
|Barrel Caliber||300 BLK|
|5/8 x 24|
Gas Block Size
Gas System Length
|Barrel Extension Finish||
Browse all of our 300 Blackout Bloodline Barrels:
16″ 300 Blackout Bloodline Barrel
10.5″ 300 Blackout Bloodline Barrel
8.2″ 300 Blackout Bloodline Barrel
Waylon Spencer (verified owner) –
I have bought 4 barrels from this company. They are great. Good materials, sleek design and a prime example of craftsmanship. Each of my barrels has over 3k rounds of testing and I have not had one single issue. These guys make a great product.
Mike hindall (verified owner) –
I bought the 16 bloodline 300 black out and paired or with their BCG for my build. Put a suppressor on it and wow. This set up is amazing. The groups I get with it are great!
Joseph A. Nevil –
I am a AR15/M4 Armorer and FFL dealer… so I have not even shot this barrel but I want to say those manufacturers that dimple the barrel for you are a Godsend! Keep doing what you’re doing!! Barrel install/Gas block install was a breeze!
m.shane.frazier (verified owner) –
Made an order. Shipped when it said, quality was great. I even requested a phone call on a particular item and got a call back the same day. This is the way business is supposed to be done!!! Thanks Rosco!!!!