.22 LR. 4.5" barrel length. SN: E0020337. Black Nitron finish with matte stainless steel slide mounting laminated wood multi-color grips and adjustable target rear notch and front blade sights. Simple blowback operated internal hammer fired autoloading pistol fed by detachable single stack magazines. Left slide is marked Trailside followed by SIG Arms INC/EXETER-NH-USA, with the right additionally marked Hammerli Made in Switzerland. Comes in original black synthetic hard case with a total of four magazines, Hammerli test target, and a trigger lock. {FFL}