The checkered polymer frame is offered in Flat Dark Earth and black and has a low-bore axis for reduced felt recoil and enhanced operator controls. Four interchangeable backstraps - two arched and two flat - come standard to quickly customize the grip feel. All operating controls are fully ambidextrous for ease of use. The 5.3" hammer forged, stainless steel barrel has a threaded muzzle to accept sound suppressors, compensators and other accessorires. The stainless steel, slide has high-profile combat night sights and includes two mounting bases to accept multiple styles of optional red-dot electronic sights.