Rosco Purebred 16″ 300 Blackout Barrel



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SKU: PB-16-HB-300BLK-8-P Categories: , , Tags: , , , , , ,

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Rosco Purebred 16″ 300 Blackout Barrel

The Rosco Purebred 16” 300 Blackout barrel is perfectly suited for precision carbine shooters that plan on running only supersonic ammo, or are building a well-balanced hunting platform. They took into account the twist-rate, gas port diameter, and barrel length to bring you a high performance, optimally balanced barrel for your next custom AR build.

Rosco Manufacturing’s “Purebred” series is a testament to precision and quality manufacturing. Rosco took a step back to see how they could create a barrel line that would be a culmination of all the lessons learned through years of making barrels for several OEM’s. The result is a barrel that will produce results out of the box for any shooter that is looking to take their skills above and beyond. All of our Purebred barrels are made from scratch in our Rhode Island facility and start life as a blank piece of 416R stainless steel.

Arm or Ally is proud to add Rosco Manufacturing to our wide selection of AR Barrels from Ballistic Advantage and Faxon.  If you just starting to build your own custom rifle, see our our growing selection of AR parts, to include receivers, bolt carrier groups, muzzle devices, and more in our AR parts department. Are you a reloader, or considering becoming one? We offer a large selection of bullets and brass to choose from.

Product Information

Manufacturer: Rosco Manufacturing
Series: Purebred
Profile: Heavy
Part #: PB-16-HB-300BLK-8-P
Caliber: 300 Blackout
Length: 16″
Material: 416R Stainless Steel
Barrel Extension Finish: Nickel Boron
Finish: Bead Blasted
Gas System Length: Pistol Length
Gas Block Diameter: .750″
Twist Rate: 1:8 inches
Muzzle: 5/8 x 24 threaded
Weight: 29.63 oz
MSRP: $220.00

Weight 31 oz
Dimensions 17 × 3 × 2 in
Barrel Finish

Bead Blasted

Gas Block Diameter


Gas System


Muzzle Thread

5/8 x 24

Barrel Length



300 Blackout


Rosco Manufacturing


416 Stainless Steel

Part Type

Barrel, Upper Receiver Parts





Twist Rate


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