Weaver 48503 Top Mount Base 47M Matte Black Long Action Scope Mount

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Description

The Weaver 48503 Top Mount Base delivers rock-solid scope mounting for Marlin MR7, Winchester Model 70, and Browning A-Bolt long action rifles. This precision-machined aluminum base provides the stable platform needed for consistent shot placement at extended ranges.

What Makes This Different

Unlike generic scope bases, the Weaver 47M features receiver-specific machining that creates an exact fit without shimming or adjustment. The matte black anodized finish resists corrosion while eliminating glare that could compromise shooting positions. Each base undergoes precision drilling and tapping to ensure perfect alignment with factory receiver holes.

Key Features

Receiver-specific design for Marlin MR7, Winchester 70, and Browning A-Bolt long action rifles
6061-T6 aircraft aluminum construction with matte black anodized finish
Precision-machined Weaver-style rail accepts standard scope rings
Factory drilled and tapped mounting holes ensure perfect receiver alignment
Low-profile design maintains proper scope height for comfortable shooting
Corrosion-resistant finish withstands harsh hunting conditions
Compatible with standard Weaver and Picatinny scope rings

Field testing demonstrates the 47M base maintains zero through hundreds of rounds and temperature extremes from -20°F to 120°F. The secure mounting system prevents scope shift during heavy recoil from magnum cartridges. Hunters report consistent performance in rain, snow, and humid conditions without finish degradation or mounting looseness.

Technical Specs

Material: 6061-T6 aircraft aluminum
Finish: Matte black hard anodized
Compatibility: Marlin MR7, Winchester Model 70, Browning A-Bolt long action
Rail Type: Weaver-style cross slots
Mounting: Factory drilled receiver holes
Profile: Low-profile design
Country of Origin: USA
Model Number: 48503

The Weaver 47M base transforms scope mounting from a compromise into a precision system. Professional gunsmiths choose this base for custom builds requiring absolute reliability. Limited availability makes this the time to secure proper scope mounting for long action rifles.