45 ACP cartridge’s recoil is generally exaggerated ... In addition to the full sized model, the HK45 is sold in compact and tactical versions. The primary difference between the three models ...

The magazine holds 8 rounds of 45 ACP, with one in the chamber. The barrel is 3.9 inches long, which means that the HK 45 compact is the smallest gun on this list, but it is quite concealable ...