hi,
i can see that the BBs has been placed inside the bullets & it's ready to shoot now!
did you try to shoot? if it can't shoot, i think there is a gas leakage inside the gas system inside the hand grip...
some of our KOKUSAI revolvers has this problem...
this M10 4"inch barrel is NICE! (old version)
for gas version KOKUSAI M10, i just missed this one, so i bought a cap version instead.
thanks