It uses a 9x19mm Parrabullum NATO round, which is the standard round for most pistols and submachine guns made by countries in NATO.
the m16 uses 5.56 caliber ammo
It reloads by itself. So don't bother asking this question. >:D
.380 ACP
M16 and M4, r700 and M40A3, and I know this isn't over kill but mp5 and m9. Sorry if i forgot one but i don't use over kill.
It will be printed on the barrel
45+70 Government
The HK 4.6×30mm cartridge.
Take it to a gunsmith for verification.
yes the sas use it
Yes I have a bunch of airsoft gun's and i have used ammo that is the wrong size... and i clogged the gun and had to take it apart to get it out.
.45 Long Colt.
A Phoenix 25 would use 25 Auto.