I’m selling a complete drop in HPA (Wolverine SMP) gearbox for the G&P Stoner 63/MK23. This was originally a drop in conversion performed by Rudy Hilado from Bingo Airsoft Works (a.k.a Bingo Airsoft Designs) before Rudy retired. The nozzle has been shortened by 2.3mm and the FCU, and trigger board are wired to the auto wind mechanism that’s on the front of the gearbox. The AGL can be re-routed through the bottom of the gearbox and out of the pistol grip if desired. Full auto, semi auto and auto wind (when the trigger is pulled) are all fully functional. Comes with an Amped AGL, Amped mini FCU Lipo battery and another 3/32 set screw. $289 shipped to the Continental U.S. Will also sell to AK/HI but shipping will be extra. I will also consider selling this at an increased price with the G&P Stoner 63 that I had this in. It’s the railed version and will come with the box mag internals swapped into a real steel RPD drum magazine. Message me for further details.