Weaver 48107 Top Mount Base #403 — Aluminum Black Gloss

The Weaver 48107 Top Mount Base #403 is a one-piece aluminum scope base finished in gloss black and machined to tight tolerances. It provides a secure, receiver-mounted platform for Weaver-style rings and is specified for application #403. This base is intended for use on compatible lever-action rifles, including angle-eject models such as the Winchester 94.

Key Specifications

• The base is constructed from ALUMINUM.
• The finish is BLACK GLOSS.
• The listed application is #403.
• The product is a 1-piece top mount base designed to attach to the receiver.
• Compatible ring style is Weaver-style rings.
• Rings included: No.
• The stated elevation is 0 MOA.
• Overall dimensions are 0.65 x 3.40 x 8.10.
• Compatible make/model listing includes Winchester 94.
• The action type noted in the attributes is Lever Action.

This Weaver #403 top mount base offers a machined, low-profile platform for mounting optics with Weaver-style rings on compatible lever-action rifles. Its aluminum construction and gloss-black finish provide a lightweight, durable mounting solution that maintains alignment and ring stability without receiver modification. The straightforward design makes it a practical choice for shooters specifying a dedicated top mount base for angle-eject lever-action rifles.