Scope Barrel Mount 25.4mm Ring Adapter with 20mm Weaver Picatinny Rail

Our Take

One piece that gives you a 25.4 mm ring on one side and a 20 mm rail on the other — so you can mount a 1-inch tube scope or a rail-clamp sight off a barrel. 45 x 20 x 25.4 mm, 40 g, metal. Handy for airguns and rimfires without receiver rails. As with any barrel mount, remember two things: heat shifts the zero as the barrel warms, and the clamp’s grip range is the real spec. If your barrel is unusually thick or thin, measure before ordering. For light guns and plinking it’s a tidy little solution.