Limit Ammo capacity at 20 rounds across the board for any firearm and leave it at that. Don't restrict cosmetic parts.

Any firearm that is for civilian use should be limited
to 20 rounds of ammunition. whether is be a pistol
a shotgun a rifle whatever. if people want
30, 60, 75 or 100 round magazines put an ATF
Tax stamp on them. don't ban grips and stocks that
has nothing to do with anything.