Rosco K9 16” Barrel Tested – Mixed Results
This video features a detailed review of the Rosco Manufacturing K9 16” AR-15 barrel. The reviewer meticulously inspects the barrel's specifications, performs a borescope examination, and conducts live-fire testing at 100 yards using three different types of ammunition: Federal Gold Medal 77gr SMK, IMI Razor Core 77gr SMK, and Winchester M193 55gr FMJ. The test includes measuring velocity consistency and group performance, analyzed using an A-ZED scoring system. Unique features like the intermediate-length gas system and continuous taper profile are discussed, with mixed results highlighting performance variations across different ammunition types. The video aims to compare this barrel against other options in the market.










