The HK45C was extensively tested and operationally proven, and chosen by the Navy SEALS. This HK45 Compact uses an HK proprietary O-ring, cold-hammer forged barrel for precise barrel-to-slide lockup and optimal accuracy. The polygonal rifling is for longer barrel life and increased accuracy. The threaded barrel can be used with muzzle mounted sound suppressors. It is capable of firing standard .45 ACP ball through +P ammunition, it comes with (2) 10-round magazines and can use those designed for the full-size HK45. There is an extra backstrap for a custom fit for each shooter’s hand. USP-style control lever, a combination safety and decocking lever. The control lever is frame mounted and is quickly accessible; it has a positive stop and returns to the “fire” position after decocking. Ambidextrous controls with dual slide releases and enlarged magazine release. This HK45C is a V1 variant, double action/single action (DA/SA), but can be converted to, a wide variety of variants that use different trigger firing modes. Integral MIL-STD-1913 (Picatinny) rail molded into the polymer frame dust cover for mounting lights, laser aimers, and other accessories. HK factory Night Sights installed. It includes a Gemtech lanyard, original box and manuals. Extras include a HK holster, ammo holster, flat magazine and 3.9 inch barrel for conversion to carry. 50 rounds have been shot through it. MY FFL to buyer's FFL only.