.22 LR. 4.675" barrel length. SN: 4622. Blued metal finish with checkered walnut grips, walnut magazine floorplate extension, and a drilled and tapped frame for mounting muzzle weights. Simple blowback operated striker action autoloading pistol fed by detachable single stack magazines. The left slide is marked TT-OLYMPIA PISTOLE-Cal .22 L.R. followed by a {Knight's Helmet within banner} marking. The underside of the barrel shows two sets of importer markings. B.T.C./S.E.M. CA. along with the struck markings N.A. CO./RIDGEFIELD, N.J. The Norinco TT-Olympia was a copy of the famed Walther Olympia introduced in 1936. Comes with one magazine.