Sharps Bros Ambidextrous AR-15 Pistol Lower Build Kit, SBA5 FDE Adjustable Brace

Sharps Bros Ambidextrous Bolt Release AR-15 Pistol Lower Build Kit, SBA5 FDE Adjustable Stabilizing Brace

This is a complete lower build kit designed for AR-15 pistol platforms. It includes everything needed to finish a stripped lower receiver except the serialized receiver itself. The kit features a Sharps Bros Gen 2 Livewire forged lower receiver paired with a mil-spec heavy-duty buffer tube, standard carbine recoil buffer, and an SB Tactical SBA5 adjustable stabilizing brace in Flat Dark Earth. The ambidextrous bolt release gives you control options regardless of your shooting hand.

Key Features

• Sharps Bros Gen 2 Livewire forged lower receiver, 7075-T6 aluminum, black anodized
• Ambidextrous bolt release for left and right-handed operation
• Complete mil-spec lower parts kit with fire control group and pistol grip
• SB Tactical SBA5 adjustable stabilizing brace in FDE with integrated strap
• Mil-spec heavy-duty carbine buffer tube with standard 3 oz recoil buffer and spring
• US Tactical mil-spec receiver end plate and castle nut
• Multi-position adjustable brace with integrated QD sling attachment
• Lower receiver weight 8.70 oz, multi-caliber compatible

Perfect For

• Shooters building their first AR-15 pistol platform
• Left-handed and ambidextrous shooters seeking dual control options
• Builders who want a complete lower parts kit without sourcing individual components
• Those prioritizing a quality forged lower receiver and adjustable brace setup
• Pistol configurations with mil-spec buffer tube compatibility

Sharps Bros Gen 2 Livewire Forged Lower Receiver

The Sharps Bros Gen 2 Livewire lower receiver is forged from 7075-T6 aluminum and CNC machined for precision. The black anodized finish provides durability and corrosion resistance. This receiver is multi-caliber compatible, meaning it works with standard AR-15 platforms regardless of the upper assembly caliber you choose. The forged construction adds structural integrity compared to billet alternatives. The 8.70 oz weight keeps the overall platform light without sacrificing strength.

Ambidextrous Bolt Release Design

The ambidextrous bolt release allows you to lock and release the bolt carrier from either side of the receiver. This is particularly valuable for left-handed shooters or those who switch shoulders frequently. The bolt catch includes a threaded pin design for secure retention. Unlike some ambi controls that require separate installation steps, this system integrates into the lower receiver design itself.

SB Tactical SBA5 Adjustable Stabilizing Brace

The SBA5 brace in Flat Dark Earth offers six positions of adjustment to fit different shooter preferences and arm lengths. The integrated stabilizing strap wraps around your arm for increased control during firing. The brace mounts directly to the mil-spec carbine buffer tube included in this kit. The QD sling attachment point lets you add a single-point or two-point sling without additional hardware. The FDE color coordinates with many modern tactical setups.

Complete Lower Parts Kit and Buffer System

This kit includes a complete mil-spec lower parts kit containing the trigger assembly, hammer, disconnector, selector, magazine catch, bolt catch components, and all required pins and springs. The mil-spec heavy-duty carbine buffer tube accommodates the standard 3 oz recoil buffer and carbine-length recoil spring. The US Tactical receiver end plate and carbine castle nut complete the buffer system assembly. All components are mil-spec standard, ensuring compatibility with future upgrades or replacements.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. Lower receiver not included. Verify that your completed firearm complies with all applicable laws before assembly or use.