The Weaver Multi-Slot Base #414T, Mossberg 500/535/835 and Savage 320 (Weaver part no. 48333) is a one-piece multi-slot scope base for the Mossberg 500, 535 and 835 shotguns and the Savage 320. It is made from lightweight aluminum meant to hold up to powerful recoil, and its cross-lock channel accepts all Weaver cross-lock rings. The multi-slot top gives you flexibility to run a scope, red dot or laser optic and to set eye relief where it suits you. Weaver builds it in the USA, and it is fully compatible with Weaver Top Mount Rings.

Key Specifications

• It is made for the Mossberg 500 (1997 and newer), 510, 590, 535 and 835 shotguns and the Savage 320, the fit Weaver lists for this part number.
• This is a one-piece multi-slot base, a single piece of aluminum that carries the whole optic mount.
• Construction is lightweight aluminum built to take the recoil of even powerful loads.
• The cross-lock channel accepts all Weaver cross-lock rings, and the base is fully compatible with Weaver Top Mount Rings.
• The multi-slot design supports scopes, red dots and laser sights, with room to set eye relief where it suits you.
• It is made in the USA by Weaver, a name long tied to scope mounting hardware.
• Base screws follow Weaver’s torque guidance of 15 inch-pounds for 6-48 screws and 18 inch-pounds for 8-40 screws, so a correct torque wrench setting keeps the base from shifting.

Frequently Asked Questions

Which rings can I use on this base? Weaver Top Mount Rings fit it, and the cross-lock channel accepts all Weaver cross-lock rings.

Can I mount a red dot or laser on it? Yes. Weaver describes the multi-slot design as supporting scopes, red dots and laser optics.

Which firearms does this base fit? Weaver lists it for the Mossberg 500 (1997 and newer), 510, 590, 535 and 835 shotguns and the Savage 320.

Buy the Weaver Multi-Slot Base #414T, Mossberg 500/535/835 and Savage 320

Fit this base to your rifle, add rings that match your scope tube, and finish the mount with parts from our scope bases lineup and the full Weaver catalog. Order from our Lubbock, Texas gun shop for fast shipping.