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Weaver TM Scope Base #47 Matte Browning Winchester Marlin Sears 48503
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
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SKU: 48503-076683485038
Overview
This top-mount base is built for hunters setting up a compatible rifle for a scope installation that needs a secure, low-profile foundation. It is machined to tight tolerances and uses a square cut notch designed to mate with Weaver Detachable Rings, with custom hardened fastening screws included. The matte black aluminum finish keeps the look subdued, while the fit list covers several Browning, Marlin, Sears, and Winchester applications, including rear-base-only configurations on some models. Because fitment varies by rifle and position, it is best suited for owners who are matching the base carefully to a specific setup.
Why Hunters Choose the Weaver
Precision Built
Tight tolerances for a custom
Square Cut
Weaver Detachable Ring cross bolt
Includes Custom
Hardened fastening screws
Matte Black
Finish suits a low-profile mounting
Fits Multiple
Browning, Marlin, Sears, and Winchester
Key Features
- Weaver Top-Mount No. 47M scope base, model 48503.
- Machined to tight tolerances for a custom fit.
- Square cut notch mates with Weaver Detachable Ring cross bolt.
- Includes custom hardened fastening screws.
- Aluminum construction with matte black finish.
- Fits Browning A-Bolt, A-Bolt 22 Stalker, BBR, and select other rifles.
Best Used For
- Hunters mounting optics on compatible Browning, Winchester, Marlin, or Sears rifles
- Shooters needing a rear or front base matched to Weaver detachable rings
- Owners of listed rifles wanting a precision-built, matte black top-mount base
- Users replacing worn scope bases on supported long-action or short-action setups
Specifications
| Base Number | No. 47M |
|---|---|
| Blade Finish | Matte Black |
| Custom Hardened Fastening Screws Included | Yes |
| Fits | Browning A-Bolt, A-Bolt 22 Stalker, BBR Long Action & Short Action - Rear Base Only, Browning Medallion - Front and Rear Base, Enfield (Cut down like a Winchester 70) - Rear Base Only, Marlin MR7 - Rear Base Only, Sears 53 - Rear Base Only, Winchester Model 70 - Rear Base Only, And Others |
| Material | Aluminum |
| Model Number | 48503 |
| Mount Type | Top-Mount |
| Precision Built | Yes |
| Square Cut Notch | Yes |
| Tight Tolerances | Yes |
Pros
- Precision built with tight tolerances for a custom fit
- Square cut notch mates with Weaver Detachable Ring cross bolt
- Includes custom hardened fastening screws
- Matte black finish suits a low-profile mounting setup
- Fits multiple Browning, Marlin, Sears, and Winchester models
Considerations & Trade-offs
- Rear-base-only fitment applies to several listed rifles, so this mount may not cover a complete two-piece setup by itself.
- Compatibility is specific to the models named in the product data; confirming the exact rifle variant is important before purchase.
- The matte black aluminum finish is functional and low-profile, but the listing does not provide any additional finish or durability details.
- This is a scope base only, so rings and optic mounting hardware are not included beyond the provided fastening screws.
Suggested Comparisons
- Scope bases
- Scope ring sets
- Complete scope mounting kits
Suggested Accessories
- Scope rings
- Rifle scope
- Torque wrench
- Thread locker
Frequently Asked Questions
Which rifles does the Weaver No. 47M base fit according to the product data?
The listed fits include Browning A-Bolt, A-Bolt 22 Stalker, BBR long action and short action, Browning Medallion, Enfield (cut down like a Winchester 70), Marlin MR7, Sears 53, and Winchester Model 70. Some are listed as rear base only, and Browning Medallion is listed for front and rear base.
Is this a one-piece base or a specific mount type?
The product is identified as a Weaver Top-Mount No. 47M base. The source does not provide additional installation details beyond that.
What material and finish are listed for this scope base?
The specifications list aluminum with a matte black finish.
Does the product include mounting hardware?
Yes. The description says custom hardened fastening screws come with every Weaver base.
What does the square cut notch do?
The source says the square cut notch precisely mates to the sturdy cross bolt in every Weaver Detachable Ring, which is part of the base's recoil-focused design. No further performance claims are provided.