Questions

>>34672906
yes, it's called MUH DIK.

>>34672906
Come back when you're at least 14 years old.

>>34673029
*oldfag, im new.

>>34672906
No, or else it would become SBR.

>>34672906
hello YES i herd that tha best is like an uzi calibered in 50 big mashine gun thanks
my uncul has one and he was in the armee it broak his shooldar

What is the question?
There is armor piercing ammo in larger calibers like 9mm. The smaller calibers in those two guns were chosen for their lighter weight and flatter trajectories.