The Action Army AAP01 rear mount is designed to work as a mountable picatinny rail set that is a drop in fit for the pistol.  The set is standard picatinny and works with all compatible lights, lasers, and/or red dot optics. 

Compatibility: 

• Action Army AAP01 GBB Pistol 

Includes: 

• x1 Action Army AAP-01 Rear Mount