Knight Armament SR16 Mod 2.1 5.56mm Upper Receiver/Suppressor Package | 11.5" Barrel

First commercial release of the Knights Armament 11.5” SR-16 Mod 2.1 suppressed upper receiver kit! The 10.75” KAC FF RAS 5 handguard was developed for use on SR-16 platforms, specifically optimized for KAC upper receivers with a notched receiver. The enhanced barrel nut interface and robust construction keep deflection minimal while enabling user-level barrel replacement.

The full-sized Combat Rifle Suppressor (CRS) was designed to virtually eliminate flash and system backpressure while exceeding the durability that KAC signature reduction devices are known for. Pressure Reduction Technology minimizes back pressure, resulting in a negligible gas increase in the system that is typically responsible for bolt carrier velocity and rate of-fire acceleration.