The Weaver #403 Top Mount Base, Winchester 94 Angle Eject Big Bore (Weaver part no. 48107) is a top mount scope base for the Winchester 94 Angle Eject Big Bore. Weaver machines its top mount aluminum bases to tight tolerances for a custom fit, and the cross-lock design works with a variety of riflescope rings. Weaver builds it in the USA, and the base is a one-piece part, so some firearms need both a front and a rear base. It suits a lever-action big-bore rifle that needs a scope base.

Key Specifications

• It is made for the Winchester 94 Angle Eject Big Bore, the fit Weaver lists for this part number.
• Weaver also lists the Mossberg 464 lever action (center fire only).
• Weaver’s fit data lists this part number in a black finish.
• This is a one-piece base, and Weaver notes that some firearm types need both a front and a rear base.
• It is machined to tight tolerances for a custom fit, which helps the base seat securely on the receiver.
• Construction is aluminum, a light material that keeps weight off the rifle.
• Weaver’s cross-lock design gives secure compatibility with a variety of riflescope rings.
• It is made in the USA by Weaver.
• Weaver’s torque guidance for base screws is 15 inch-pounds for 6-48 screws and 18 inch-pounds for 8-40 screws, so setting the torque wrench to the right figure keeps the base from shifting.

Frequently Asked Questions

Which firearms does this top mount base fit? Weaver lists it for the Winchester 94 Angle Eject Big Bore and the Mossberg 464 lever action (center fire only).

Do I need a front and a rear base? Weaver notes that this is a one-piece base and that some firearm types need both a front and a rear base.

What torque should I use on the base screws? Weaver recommends 15 inch-pounds on 6-48 screws and 18 inch-pounds on 8-40 screws.

Buy the Weaver #403 Top Mount Base, Winchester 94 Angle Eject Big Bore

Pair it with rings that match your scope tube and finish the mount with parts from our scope bases selection and the full Weaver lineup. Order from our Lubbock, Texas gun shop for fast shipping.