Sharps Bros Ambi AR-15 Pistol Lower Build Kit with SBM4 Stabilizing Brace

Sharps Bros Ambidextrous Bolt Release AR-15 Pistol Lower Build Kit, SBM4 Stabilizing Brace

This is a complete lower build kit designed specifically for AR-15 pistol configurations. You get a Sharps Bros Gen 2 Livewire forged lower receiver in 7075-T6 aluminum, a full mil-spec lower parts kit, the complete buffer system, and an SB Tactical SBM4 stabilizing brace. Everything needed to finish a pistol lower except the upper receiver.

Key Features

• Sharps Bros Gen 2 Livewire forged lower receiver, 7075-T6 aluminum, black anodized
• Ambidextrous bolt release for left and right hand operation
• Complete mil-spec lower parts kit with fire control group and pistol grip included
• Heavy duty pistol buffer tube with standard carbine buffer and recoil spring
• SB Tactical SBM4 black pistol stabilizing brace with integrated adjustable strap
• Threaded bolt catch pin and mil-spec receiver end plate and castle nut included
• Multi-caliber lower receiver compatible with various AR-15 pistol uppers
• Lower receiver weight 8.70 oz, buffer weight 3 oz

Perfect For

• Shooters building a compact AR-15 pistol platform
• Left handed and right handed shooters who prefer ambidextrous controls
• Builders wanting a quality forged receiver with integrated brace system
• Pistol configurations using standard AR-15 upper assemblies

Sharps Bros Gen 2 Livewire Forged Construction

The Sharps Bros Gen 2 Livewire receiver is forged from 7075-T6 aluminum and CNC machined for precision fit and durability. The black anodized finish provides corrosion resistance and a clean aesthetic. Forged construction offers superior strength compared to billet receivers while maintaining the reliability expected in AR-15 pistol platforms. The multi-caliber design means this lower works with standard AR-15 uppers in various calibers without modification.

Ambidextrous Bolt Release Design

The ambidextrous bolt release lever allows both left and right handed shooters to operate the bolt catch without repositioning their grip. This feature is particularly valuable in pistol configurations where ergonomics and quick reloading matter. The included threaded bolt catch pin ensures secure retention of the bolt catch assembly.

SB Tactical SBM4 Stabilizing Brace System

The SB Tactical SBM4 is a fixed position pistol stabilizing brace designed for smooth pistol buffer tubes. The M4-style design includes an integrated adjustable stabilizing strap and an integrated sling attachment point. The durable polymer construction keeps overall weight minimal while providing a solid mounting interface. The brace mounts directly to the heavy duty pistol buffer tube included with this kit.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. Lower receiver not included. BCG and charging handle are not included.