The ar-15 conversion adapter will fit any standard ar-15 556/223 lower and convert it to 9mm with no required modifications to your lower or magazines.This mag well adapter has a built in magazine release for your glock mags, locks in place with your standard ar-15 magazine catch, releases the same way ar mags do and has a bolt hold open feature that locks your bolt back after the last round.This 9mm ar adapter accepts glock style double stacked 9mm magazines and comes with one 10 round magazine.100% made in the usa.Important- you must install a complete 9mm ar rifle or pistol upper receiver onto your 556/223/300blk lower receiver for this to fit and operate.

Finish: Black
Type: Conversion Adapter
Model: AR Conversion Adapter
Material: 6061-T6 Aluminum