Mischief Machine COMMANDER P320 Aluminum Grip ModuleMischief Machine COMMANDER P320 Aluminum Grip Module Mag release not included P320 COMMANDER: Full size frames are compatible with the AXG magwell 1911 Grip Angle Aggressive G10 grip panels and exchangeable backstraps AXG mag release required (not included) Current sizes are Full size and the X Compact, with the rest of the sizes coming available after launch