Our Black Widow Mini-Revolvers evolved from our popular .22 Magnum frame series and include the time tested design characteristics that are incorporated in all NAA Mini-Revolvers. The result is enhanced stability and accuracy for the shooter. The Black Widow have a Heavy Vent Barrel, a Bull Cylinder, Oversized Black Rubber Grips and comes with either Adjustable Marble Arms Sights for elevation or Fixed Low Profile Sights, also by Marble Arms. Features: 22 LR conversion cylinder Heavy vent barrel Bull cylinder