Leupold QRW Browning BAR Base | 1-pc Aluminum Matte LU179106

The Leupold QRW Browning BAR 1-piece base is a precision-machined mounting solution built specifically for the unique recoil of Browning BAR and Benelli R1 rifles. Semi-auto hunters often struggle with "base shift" caused by the distinct double-pulse recoil of a gas-operated system. This one-piece design solves that problem by turning your receiver into a single, rigid platform, eliminating the independent movement and alignment issues common with two-piece mounts.

By spreading the stress of every shot across the entire receiver footprint, this base prevents the torsional flex that can pull a scope out of alignment. It replaces heavy, bulky steel rails with aircraft-grade aluminum, giving you a much higher strength-to-weight ratio. The result is a rock-solid foundation that can handle the violent cycling of magnum calibers without adding unnecessary mass to your hunting rifle.

At a featherweight 1.2 ounces, this base maintains the natural balance of your rifle while providing a snag-free, low-profile 0 MOA fit. The cross-slot Weaver design allows you to adjust your ring spacing for the perfect eye relief, ensuring you're ready for a quick shot in thick brush. Made in the USA and extreme-recoil tested, it delivers the repeatable zero retention you need to trust your rifle through every season.

Key Features

• One-Piece Base Construction | Unified mounting surface eliminates independent inter-base movement and prevents zero drift under semi-auto recoil.
• Aircraft-Grade Aluminum | High strength-to-weight ratio resists recoil deformation while adding only 1.2 ounces to the rifle's total mass.
• Cross-Slot Interface | Weaver and Picatinny compatible design with transverse recoil lug engagement prevents ring slippage during cycling forces.
• 0 MOA Cant | Receiver-contoured fitment maintains natural sight alignment and a consistent cheek weld for faster target acquisition.

Technical Specifications

• SKU: 179106
• Material: Aircraft-Grade Aluminum
• Finish: Matte Black
• Base Configuration: One-Piece
• Mount Type: Cross-Slot (Weaver-Style | Picatinny Compatible)
• Weight: 1.2 oz
• Base Cant: 0 MOA
• Receiver Screw Torque: 22 in-lb
• Compatibility: Browning BAR | Benelli Argo | Benelli R1
• Origin: Made in the USA

If you're running a Browning BAR or Benelli platform, your mounting system has to match the rifle’s recoil dynamics—not fight them. The Leupold QRW 1-piece base is purpose-built for that exact problem. Get it from SMKW, where proven mounting solutions and technical reliability come standard.