TM GBB Hi-CAPA/CUSTOM MAGAZINE CATCH High accuracy aluminum cut out. Adjustable lever to adjust the angle as you like. Compatible with Tokyo Marui GBB gun and Hi-CAPA series. It is light weight and made with high accuracy aluminum cut out, assuring fast magazine release and secure hold. For best performance, you can adjust the angle of the lever depending on the hand size /position. Great for small hand shooters! Easy mag release made possible without repositioning your hand on the grip. Recommended for Shooting Match with quick magazine change.