Thanks for the video! While disassemblying mine, a small part fell out that I cant find a place for though! It's a small plastic angular U shape, ca. 5×10mm
I know this is extremely late but i think youre talking about the piece that goes over the hex nut thats at the botom of the grip. Its supposed to hold the nut in place so you can turn the screw to loosen the co2 canister