This is a lightly used SIG SAUER M18/P320 complete with: SIG OEM M13x1 LH threaded barrel Original SIG OEM barrel One 17-round magazine and TWO 21-round magazines AimPoint ACRO P1 Apex ACRO Suppressor sights and ACRO mount. Original SIG OEM sights and loaded chamber indicator SIG OEM Flat Trigger SIG OEM Curved Trigger SUREFIRE X300 ultra FDE weapon light.