The Weaver #43 Top-Mount Scope Base (Weaver part no. 48043) is machined for a wide run of Remington firearms — the Model 10, 11, and 12 pump guns plus the Model 34, 341, and 510 rimfire rifles — giving them a factory-tight platform for a riflescope. Weaver cuts the base from aluminum and finishes it in a black gloss that matches most factory blued receivers. Because it’s machined to the exact screw pattern shared across this Remington lineup, it bolts straight to the factory holes with no drilling or gunsmithing needed. This is the correct base to start with if you’re mounting glass on any of these older Remington platforms.

Key Specifications

• Purpose-built to fit the Remington Model 10, 11, and 12 pump guns.
• Also fits the Remington Model 34, 341, and 510 bolt-action rimfire rifles.
• Listed as a 1-piece base, so a single component bridges the full mounting area.
• Uses Weaver’s To Receiver mount style, bolting directly to the factory tapped holes.
• Finished in black gloss to match most blued receivers.
• Machined from aluminum for a lightweight, corrosion-resistant base.
• Requires Weaver-style rings to complete the mount.
• Ships with rings not included, so pair it with your own Weaver-style rings.
• Cross-references as Weaver Application #43 on the brand’s official fit chart.

Frequently Asked Questions

What firearms does this base fit? It’s machined for the Remington Model 10, 11, 12, 34, 341, and 510, listed under Weaver’s Application #43.

Are scope rings included? No, this is the base only; pair it with a set of Weaver-style rings to finish the mount.

Does it require any gunsmithing to install? No, it bolts directly to the factory screw holes shared across this fit list.

Buy the Weaver #43 Top-Mount Scope Base for Remington 10/11/12/34/341/510

Older Remington platforms are worth keeping in the field, and a base machined to the exact receiver pattern is what keeps a scope tracking true on one. Order this Weaver #43 from our Lubbock, Texas gun shop and it ships fast to your door, along with more scope bases and mounting hardware.