DROP BOLT HOLD OPEN ACTUATOR FOR USE WITH AR-15/M16 TYPE FIREARMS AND INCORPORATING A MODIFIED AND DISPLACEABLE FOLLOWER FOR ENGAGING A BOLT CATCH MECHANISM SUCH AS IN CONJUNCTION WITH RIMFIRE AMMUNITION

摘要

A bolt catch assembly for use with a firearm including a receiver with an exposed receiving chamber and an underside engageable magazine. The assembly includes a bolt catch actuator housing supported in seating fashion relative to the receiving chamber and communicating with an attachable magazine. A catch actuator is supported in elevatable fashion relative to an end of the actuator housing. A follower component is upwardly and biasingly disposed within the magazine and which, upon contacting the catch actuator, displaces an associated bolt catch of the firearm in an upper and bolt restraining position.