What does .45acp mean?

.45acp meaning in Urban Dictionary

ACP = car Colt PistolThe legendary, and common, caliber, used in handguns of broad varieties. The .45acp cartridge ended up being chambered in the celebrated Colt M1911A1 handgun, utilized by us infantry during WWII..45acp is employed even today, for these types of weapons like the H&K Mark 23 SOCOM, and H&K's USP's. .45acp is even the quality when it comes to Tommygun utilized in WWII, and today it really is used in H&K's UMP submachine weapon.