Arisaka Defense Hand Stop, Anodized Finish, Black, Fits M-LOK HS-M The Patent Pending Arisaka Hand Stop is a continuation of our low profile" minimal control accessories. The primary goal of this accessory is to aid the user in pulling their rifle into their shoulder" enhancing control and recoil mitigation. The Hand Stop can also be used as a barricade stop" or reversed and placed at the front of the handguard to prevent the support hand from slipping off the end. The size and profile were designed to fit a wide variety of hands without being too large to get in the way.