Description
The Weaver Top Mount Aluminum Extension Scope Base #40A is a one-piece top-mount designed to provide a stable platform for Weaver-style rings on a variety of bolt-action rifles. Machined to tight tolerances from aluminum and finished in black gloss, this base uses the Weaver cross-lock design to secure rings against recoil. It is specified for Remington 700 pattern long and short actions and a broad list of compatible receivers as indicated in the manufacturers fit notes.
Key Specifications
The model is #40A and is sold as a single unit.
The material is Aluminum for a balance of strength and light weight.
The finish is Black Gloss for a low-profile appearance.
The product type is a 1-piece top mount base designed to attach to the receiver.
The overall length measures 3.50 inches as provided in product dimensions.
The overall height measures 0.85 inches per the supplied specification.
The overall width measures 1.65 inches per the supplied specification.
Rings are not included with this base.
The required ring style is Weaver-style to mate with the cross-lock notch.
The elevation is specified as 0 MOA.
This compact, one-piece Weaver #40A base offers a durable, precisely machined interface for Weaver-style rings and a wide range of bolt-action rifles, including Remington 700 pattern actions. Its aluminum construction and factory finish make it suitable for replacing a worn base or installing a stable mounting platform without altering the receiver. Choose this base when you need a straightforward, proven mounting solution that prioritizes fit and reliability.
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