Weaver Tactical Extended Multi-Slot Picatinny Base Matte for Browning AB3 Long Action

The Weaver Tactical Extended Multi-Slot Picatinny Base for Browning AB3 Long Action is a purpose-built mounting solution designed to maximize your optic and accessory mounting options on this popular platform. Built from 6061-T6 aluminum and finished in matte black, this one-piece base extends forward by 1 inch compared to standard offerings, giving you significantly more real estate on your rifle's receiver for positioning your scope, red dot, or other tactical gear exactly where you need it. That extra inch can make the difference between a cramped setup and a properly balanced, ergonomic rifle build—especially if you're running a longer optic or want to leave room for a front-mounted accessory.

The extended design works within Weaver's proven multi-slot Picatinny system, meaning you're not locked into a single mounting footprint. Whether you're setting up a long-range hunting rifle, a tactical carbine, or a precision target gun, this base gives you the flexibility to dial in your sight picture and weight distribution. The 6061-T6 aluminum construction handles recoil and the rigors of field use without unnecessary weight, and the matte finish resists glare and plays well with modern tactical aesthetics.

Installation is straightforward for anyone familiar with receiver-mounted bases, but if you're new to rifle optics mounting, having a gunsmith or experienced shooter verify zero and alignment is always a smart move. This base is engineered for the Browning AB3 Long Action specifically, so fit and function are dialed in from the factory.

Key Features

• One-piece design for rigidity and simplified installation
• 1 inch extended forward reach for flexible optic and accessory placement
• Multi-slot Picatinny pattern allows multiple mounting footprints
• 6061-T6 aluminum construction for strength and minimal weight
• Matte black finish—durable and non-reflective
• Purpose-fit for Browning AB3 Long Action receivers

Specifications

Frequently Asked Questions

Will this base fit my Browning AB3 Long Action?

Yes—this base is engineered specifically for the Browning AB3 Long Action receiver. Always verify proper fit and seating before final tightening.

What's the advantage of the extended length?

The 1-inch forward extension gives you more mounting real estate on your receiver. This is useful if you're running a longer optic, want to position your scope further back for better eye relief, or plan to mount a secondary accessory on the rail forward of your primary optic.

Can I use this with any Picatinny-compatible scope or mount?

Yes. The multi-slot Picatinny pattern accepts any standard Picatinny-rail rings, mounts, or accessories. This flexibility lets you choose optics and gear independently of the base itself.

What's included?

The base comes as a one-piece unit. Mounting hardware (scope rings, fasteners) and optics are sold separately.