Your Browser is OutdatedQ&A for Rosco Manufacturing Purebred .300 AAC Blackout Barrel — 6 Questions & 6 Answers
the Rosco Purebred 10.5" .300blk barrel weighs approx. 21 ounces
No, the Rosco .300blk barrel requires a standard Pistol Length gas tube that is sold separately.
only the K9 Series barrels will come supplied with their appropriate length gas tube due to their proprietary measurements
The 10.5" Rosco Manufacturing Purebred .300 AAC Blackout Barrel has a gas block journal size of 0.750 and uses a pistol length gas system. So yes both the pistol length gas tube and low profile gas block from Aero Precision will work.
This is what the manufacturer says in regards to their NiB treatment. "The polished Nickel Boron will aid in corrosion resistance, surface hardness, and increased lubricity. I.E. Meticulous manufacturing leads to a precision instrument." Yes, the feed ramps on the Rosco Manufacturing Purebred .300 AAC Blackout Barrel are NiB treated.
Yes, the Rosco Manufacturing Purebred .300 AAC Blackout Barrel will work with an Adams Arms Gas piston system as long as the gas block and gas system length are compatible.
This barrel uses a .750 gas block journal. If you are looking for the size of the actual gas hole, unfortunately the manufacturer has not provided that information, even on their own site. We recommend contacting them directly, they should be able to provide you with that information. You can reach them here: https://www.roscomanufacturing.com/contact/