Abstract: A weapon accessory mounting adapter that increases the accessory mounting capacity of a weapon by utilizing a bipod stud or picatinny rail to attach accessories. This in turn, makes the weapon and its operator more responsive to changing shooting scenarios. The weapon accessory mounting adapter utilizes the bayonet mounting lug and flash suppressor of the weapon for temporary attachment of the accessories. This configuration allows the retention of weapon ergonomics when the weapon accessory mounting adapter is attached and maintains a low weapon weight when detached. Good ergonomics and low weight are important considerations in regard to effective weapon handling.