.22 LR. 4.5" barrel length. SN: 157630. Blued metal finish mounting checkered two piece walnut grips with adjustable rear notch and matted front blade sights. Simple blowback operated single-action autoloading pistol fed by detachable single-stack magazines. Left frame is marked with six-line address and caliber marking reading MADE IN U.S.A./THE HIGH STANDARD MFG. CO/NEW HAVEN, CONN./PATENT PENDING/.22 CAL./LONG RIFLE. Left slide is struck HI-STANDARD/MODEL H-D MILITARY. Comes in black cardboard HI-STANDARD marked cardboard box with two magazines, owner's manual, and cleaning rod.