Weaver114464065
Weaver #40A Extended Top Mount Base Matte Finish for Optics$8.36
Availability: In Stock
The Weaver #40A Extended Top Mount Base is a precision rifle scope base engineered for hunters and shooters who demand rock-solid optic mounting across a wide range of popular rifle platforms. This gloss-finish base combines time-tested Weaver engineering with exacting machining tolerances to deliver the repeatable, secure foundation every quality scope needs—whether you're dialing in a hunting rifle, competition build, or long-range setup.
Weaver bases are built to withstand recoil stress through a square-cut notch design that locks precisely into the cross bolt of Weaver detachable rings, creating a marriage of base and ring that resists shifting under firing. The extended top-mount profile accommodates a broader range of ring heights and scope designs, making it a versatile choice when matching optics to mid-range rifles. The gloss finish resists glare while maintaining a clean, professional appearance in the field or at the bench.
Compatibility spans decades of proven rifle design: Remington 700 (long and short action), Mossberg 1500 and 1700, Ruger M-77 round-top, Weatherby Mark V and Vanguard, Sauer 200, H&R, Colt Sauer, BSA Monarch, and numerous other standard-receiver platforms. If your rifle uses a conventional top-mounted scope base system, the #40A likely has a purpose-built fit waiting for it.
Installation is straightforward—the precisely machined dovetail slides directly into your rifle's receiver grooves and secures via factory cross bolt. No gunsmithing required. Pair it with Weaver rings and your scope, and you've got a mounting system built to last generations of field days and range sessions.
| Product Name | Weaver #40A Extended Top Mount Base, Gloss Finish |
| Brand | Weaver |
| Mount Type | Top Mount Scope Base |
| Finish | Gloss |
| Compatibility | Remington 700 (long/short action), Mossberg 1500/1700, Ruger M-77 (round top), Weatherby Mark V/Vanguard, Sauer 200, H&R 317/322, Colt Sauer, BSA Monarch, Herters U9, Howa, Interarms, Raptor Arms, Shilen, Smith & Wesson 1500/1600/1700, Churchill Highlander, and select Enfield variants |
The #40A is designed to fit Remington 700 long and short action, Mossberg 1500 and 1700, Ruger M-77 (round top), Weatherby Mark V and Vanguard, Sauer 200, and many other standard receiver rifles. Consult the compatibility list to confirm your specific model, or contact us if you're unsure.
Yes. The #40A is engineered to pair with Weaver detachable rings, which lock into the square-cut notch on the base to create a secure, repeatable mounting platform.
No. The #40A slides directly into your rifle's receiver grooves and secures with the factory cross bolt. Installation is straightforward and does not require gunsmithing.
The extended profile provides additional height and compatibility options, allowing you to use a wider range of ring heights and scope designs compared to standard-height bases.
SKU: 114464061 • Width: 3.4in • Height: 0.3in • Depth: 5.6in • Weight: 0.06oz
Availability: In Stock
The Weaver #40A Extended Top Mount Base is a precision rifle scope base engineered for hunters and shooters who demand rock-solid optic mounting across a wide range of popular rifle platforms. This gloss-finish base combines time-tested Weaver engineering with exacting machining tolerances to deliver the repeatable, secure foundation every quality scope needs—whether you're dialing in a hunting rifle, competition build, or long-range setup.
Weaver bases are built to withstand recoil stress through a square-cut notch design that locks precisely into the cross bolt of Weaver detachable rings, creating a marriage of base and ring that resists shifting under firing. The extended top-mount profile accommodates a broader range of ring heights and scope designs, making it a versatile choice when matching optics to mid-range rifles. The gloss finish resists glare while maintaining a clean, professional appearance in the field or at the bench.
Compatibility spans decades of proven rifle design: Remington 700 (long and short action), Mossberg 1500 and 1700, Ruger M-77 round-top, Weatherby Mark V and Vanguard, Sauer 200, H&R, Colt Sauer, BSA Monarch, and numerous other standard-receiver platforms. If your rifle uses a conventional top-mounted scope base system, the #40A likely has a purpose-built fit waiting for it.
Installation is straightforward—the precisely machined dovetail slides directly into your rifle's receiver grooves and secures via factory cross bolt. No gunsmithing required. Pair it with Weaver rings and your scope, and you've got a mounting system built to last generations of field days and range sessions.
| Product Name | Weaver #40A Extended Top Mount Base, Gloss Finish |
| Brand | Weaver |
| Mount Type | Top Mount Scope Base |
| Finish | Gloss |
| Compatibility | Remington 700 (long/short action), Mossberg 1500/1700, Ruger M-77 (round top), Weatherby Mark V/Vanguard, Sauer 200, H&R 317/322, Colt Sauer, BSA Monarch, Herters U9, Howa, Interarms, Raptor Arms, Shilen, Smith & Wesson 1500/1600/1700, Churchill Highlander, and select Enfield variants |
The #40A is designed to fit Remington 700 long and short action, Mossberg 1500 and 1700, Ruger M-77 (round top), Weatherby Mark V and Vanguard, Sauer 200, and many other standard receiver rifles. Consult the compatibility list to confirm your specific model, or contact us if you're unsure.
Yes. The #40A is engineered to pair with Weaver detachable rings, which lock into the square-cut notch on the base to create a secure, repeatable mounting platform.
No. The #40A slides directly into your rifle's receiver grooves and secures with the factory cross bolt. Installation is straightforward and does not require gunsmithing.
The extended profile provides additional height and compatibility options, allowing you to use a wider range of ring heights and scope designs compared to standard-height bases.
SKU: 114464061 • Width: 3.4in • Height: 0.3in • Depth: 5.6in • Weight: 0.06oz