The Saker® ASR sets the industry standard for ease of use, modularity, and durability. The Saker ASR was designed for bolt action, semi-auto, and full-auto firearms. In addition to its performance, the Saker ASR’s design allows for maximum user adaptability and convenience. ASR™ (Active Spring Retention) Mount technology facilitates attachment via a variety of different flash hiders, muzzle brakes, and direct thread mounts.