Gaujo
UZI Talk Supporter

Early MAC upper. Does not fit my JAWS even a little bit. Trunnion is too tight, and there is this weird hook. What is it? Is there any way to use this with a JAWS? Is the trunnion bigger because modern M10 uppers are made to fit in a gun with reinforcement tabs?
Also, what's that button!?
Also, what's that button!?

Last edited: