The Weaver 20A Top Mount Base is engineered for shooters seeking a reliable and secure platform for mounting optics on a range of classic and modern rifles. Designed for compatibility with several popular rifle models, this base provides a stable foundation for scope rings, ensuring consistent accuracy in hunting, target shooting, and general sporting applications. Its robust construction and precise tolerances make it a trusted choice for firearm enthusiasts and professionals alike.
Product Overview
Manufactured from durable aluminum and machined to tight tolerances, the Weaver 20A Top Mount Base delivers a custom fit to your firearm, minimizing movement and maximizing the security of your optics. The signature Weaver cross-lock design allows for a rock-solid connection with a variety of Weaver-style rings, enhancing stability and maintaining zero even under repeated recoil. This base serves as a rear mount for Mossberg 400, Remington 14 and 141, and Winchester 05, 07, and 10 models, and as a front mount for Mauser Mark X, Interarms Mark X, Remington 798, and Western Field 770 rifles. For some applications, such as the Mauser Mark X and Interarms Mark X, shimming may be required to achieve optimal scope alignment.
Technical Specifications
| Feature |
Specification |
| Manufacturer |
Weaver |
| Model |
Weaver 20A Top Mount Base |
| Material |
Precision-machined aluminum |
| Mounting System |
Weaver cross-lock |
| Finish |
Matte black anodized |
| Compatibility (Rear Base) |
Mossberg 400, Remington 14/141, Winchester 05/07/10 |
| Compatibility (Front Base) |
Mauser Mark X, Interarms Mark X, Remington 798, Western Field 770 |
| Ring Compatibility |
Fits most Weaver-style rings |
| Installation |
Requires basic gunsmithing tools; shimming may be needed for select models |
| Weight |
Lightweight design |
| Category |
Mounts & Rings |
Further Product Details
This Weaver 20A Top Mount Base is supplied as a single base, with mounting screws included for straightforward installation. Due to the variations in rifle receiver profiles, users mounting this base on Mauser Mark X or Interarms Mark X models should anticipate the potential need for shimming to achieve precise scope alignment. Regular inspection and torque checks of mounting screws are advised to maintain optimal performance, especially after extended use or exposure to recoil. The anodized finish provides resistance to corrosion, making it suitable for use in diverse field conditions.
This base is designed for compatibility with Weaver-style rings and is intended for use with rifles chambered for hunting, sporting, or recreational shooting. Customers should verify local firearm regulations regarding scope mounts and modifications, particularly in South Africa, to ensure compliance. Weaver products are recognized for their reliability and are typically covered by a manufacturer’s warranty against defects in materials and workmanship. For best results, installation by a qualified gunsmith is recommended, especially when shimming or precise alignment is required.
