Weaver114463560
Weaver #S45 Grand Slam Top Mount Base - Matte Finish$15.71
Availability: In Stock
The Weaver #S402 Grand Slam Extended Top Mount Base in matte finish is a steel scope mounting base engineered for rifles that need front extension capability. This is a front base only—order it with a compatible rear base to complete your scope mount system. The S402 is built to handle the demands of hunters and shooters working with a wide range of rifle platforms, from vintage Mauser actions to modern production rifles like Savage, CIL, and others.
Extended top mount bases like the S402 solve a real problem: they give you flexibility when standard base mounting won't work or when you need to move your scope forward on the receiver. The matte steel finish resists glare and corrosion while keeping a low-key appearance on the rifle. This is a no-frills, purpose-built component—exactly what you need when fitment matters and you want rock-solid optics support.
Weaver has been making scope mounts for generations, and their extended bases maintain that reputation for durability and reliability. Whether you're mounting to a classic Winchester 70, Browning, Mauser, or Savage action, the S402 front base integrates with matching rear bases to create a stable platform for your scope. Check your specific rifle model and action type against the compatibility list to ensure proper fit—get the right combination of front and rear bases for your gun.
| Product Type | Scope Base (Front Mount) |
| Brand | Weaver |
| Model | #S402 |
| Material | Steel |
| Finish | Matte |
| Mount Style | Extended Top Mount |
| Sold | Each (front base only) |
The S402 front base fits a variety of rifles including Browning BBR, CIL 950/950C and 972-C models, Colt 57, Cooey 71, Enfield actions cut like Winchester 70, H&R 300/301, Herter's J-9, Marlin MR-7, Mauser 98 and 95/96 with extension, Musgrave Mark series, Savage 10 and 110 series with extension, Sears 53, Voere 2150/2165, and Winchester 670/770 with extension. Verify your exact rifle model and action type before ordering.
Yes. The S402 is a front base only. You must order it with a compatible rear base for your rifle to create a complete two-piece scope mount system. The rear base designation varies by rifle model, so confirm both components match your gun.
The S402 is specifically an extended front mount base designed for certain rifle actions and platforms where standard mounting won't work or where forward scope placement is needed. Other Weaver bases like the S46, S47, S55, and S61 fit different receiver types and actions. Choose based on your specific rifle's action and receiver configuration.
The matte steel finish is designed to resist glare and provide a durable, low-profile appearance. For long-term protection in harsh conditions, proper rifle maintenance and storage are recommended.
SKU: 114461597 • Weight: 0.2oz
Availability: In Stock
The Weaver #S402 Grand Slam Extended Top Mount Base in matte finish is a steel scope mounting base engineered for rifles that need front extension capability. This is a front base only—order it with a compatible rear base to complete your scope mount system. The S402 is built to handle the demands of hunters and shooters working with a wide range of rifle platforms, from vintage Mauser actions to modern production rifles like Savage, CIL, and others.
Extended top mount bases like the S402 solve a real problem: they give you flexibility when standard base mounting won't work or when you need to move your scope forward on the receiver. The matte steel finish resists glare and corrosion while keeping a low-key appearance on the rifle. This is a no-frills, purpose-built component—exactly what you need when fitment matters and you want rock-solid optics support.
Weaver has been making scope mounts for generations, and their extended bases maintain that reputation for durability and reliability. Whether you're mounting to a classic Winchester 70, Browning, Mauser, or Savage action, the S402 front base integrates with matching rear bases to create a stable platform for your scope. Check your specific rifle model and action type against the compatibility list to ensure proper fit—get the right combination of front and rear bases for your gun.
| Product Type | Scope Base (Front Mount) |
| Brand | Weaver |
| Model | #S402 |
| Material | Steel |
| Finish | Matte |
| Mount Style | Extended Top Mount |
| Sold | Each (front base only) |
The S402 front base fits a variety of rifles including Browning BBR, CIL 950/950C and 972-C models, Colt 57, Cooey 71, Enfield actions cut like Winchester 70, H&R 300/301, Herter's J-9, Marlin MR-7, Mauser 98 and 95/96 with extension, Musgrave Mark series, Savage 10 and 110 series with extension, Sears 53, Voere 2150/2165, and Winchester 670/770 with extension. Verify your exact rifle model and action type before ordering.
Yes. The S402 is a front base only. You must order it with a compatible rear base for your rifle to create a complete two-piece scope mount system. The rear base designation varies by rifle model, so confirm both components match your gun.
The S402 is specifically an extended front mount base designed for certain rifle actions and platforms where standard mounting won't work or where forward scope placement is needed. Other Weaver bases like the S46, S47, S55, and S61 fit different receiver types and actions. Choose based on your specific rifle's action and receiver configuration.
The matte steel finish is designed to resist glare and provide a durable, low-profile appearance. For long-term protection in harsh conditions, proper rifle maintenance and storage are recommended.
SKU: 114461597 • Weight: 0.2oz