.22 LR. 5.5" barrel length. SN: 223-43137. Blued metal finish with polished bolt and mounting a black synthetic frame with RUGER grip panels. Simple blowback operated striker action autoloading pistol fed by detachable single stack magazines. Item mounts adjustable target rear notch and forward Patridge sights along a heavy barrel that is internally threaded for accessory mounting. Markings include the two-line warning and address on the barrel, and the RUGER 22/45 model marking on the left upper receiver. Item comes with no magazine.