what does ACP mean in terms of ammunition, and what is the difference in ACP and GAP?
- 1 decade agoFavorite Answer
ACP stands for automatic Colt Pistol and GAP stands for Glock automatic Pistol. Colt and Glock are two separate makes of hand pistol.
The ammunition is for that type of weapon.
.45GAP ammo typically runs between 19,900 psi and 22,000 psi (slightly under to slightly over the standard pressure 21,000 psi maximum for the .45 ACP).
psi stands for pounds per square inch and represents the force the gun fires with with the ammo indicated.