Sig Sauer P320 Spectre Comp Blackout, Striker Fired, Semi-automatic, Polymer Frame Pistol, Full Size, 9mm, 4.6 Barrel, XRay3 Night Sights, Optics Ready, Compensator, Magwell, 21 Rounds, 2 Magazines P320V004 The P320 Spectre takes the 9mm handgun to new levels with more technology than any polymer pistol ever manufactured. The Custom Works designed compensator reduces muzzle flip by over one third, making it a shooting experience like no other.