This guide provides expert instructions from Brownells on installing the Stern Defense 5.56mm to 9mm AR-15 Magwell Adapter. The process involves securing the adapter with a tensioning screw and nylon-tipped set screws to ensure a wobble-free fit, which is critical for reliable feeding of Glock 9mm magazines. The adapter also features an arm that activates the bolt stop on the last round.
You've reached the end! 1 videos loaded.
Gun Laws by State
Read firearms regulations for all 50 states + D.C.
Find Gun Dealers
Search licensed FFL dealers near you.
