Sharps Bros Ambidextrous AR-15 Lower Kit with Heavy-Duty Carbine Buffer Tube

Sharps Bros Ambidextrous Bolt Release AR-15 Lower Build Kit, Heavy-Duty Carbine 6-Position Buffer Tube

This is a complete lower build kit designed to form the foundation of an AR-15 rifle. It includes a Sharps Bros Gen 2 Livewire stripped lower receiver paired with a full mil-spec lower parts kit, heavy-duty 6-position buffer tube, buffer, recoil spring, end plate, and castle nut. The lower receiver itself is not included, as it requires separate purchase and registration.

Key Features

• Sharps Bros Gen 2 Livewire lower receiver in 7075-T6 aluminum with black anodized finish
• Ambidextrous bolt release for left and right-handed operation
• CNC machined from custom aluminum forging for precision and durability
• Complete mil-spec lower parts kit with fire control group and pistol grip included
• Heavy-duty 6-position carbine buffer tube with standard 3 oz carbine buffer
• Standard carbine recoil spring made in the USA
• US Tactical mil-spec receiver end plate and castle nut included
• Multi-caliber lower receiver compatible with various AR-15 caliber uppers
• Receiver weight 8.70 oz with overall dimensions of 2.30" x 4.35" x 8.75"

Perfect For

• Builders looking to assemble a complete AR-15 platform from component parts
• Shooters who prefer ambidextrous controls for both left and right-handed operation
• Those seeking a precision-machined lower receiver with heavy-duty construction
• Rifle builds using standard mil-spec AR-15 components and accessories
• Shooters planning to use multiple caliber uppers on a single lower receiver

Sharps Bros Gen 2 Livewire Design

The Sharps Bros Gen 2 Livewire lower receiver represents a refined approach to AR-15 lower construction. The 7075-T6 aluminum forging combined with CNC machining creates a receiver that balances strength with weight control. The ambidextrous bolt release design eliminates the need for separate left and right-handed lower receivers, making this platform practical for shooters who switch between dominant hands or want flexibility in their setup. The black anodized finish provides corrosion resistance while maintaining a clean, professional appearance.

Heavy-Duty Carbine Buffer System

This kit includes a mil-spec heavy-duty 6-position carbine buffer tube paired with a standard 3 oz carbine buffer and USA-made recoil spring. The 6-position adjustability allows shooters to optimize length of pull based on their shooting setup, whether running the rifle with a brace or stock configuration. The heavy-duty construction ensures reliable cycling across different upper configurations and ammunition types without requiring adjustments to the buffer system itself.

Complete Lower Parts Kit Assembly

The included mil-spec lower parts kit contains all internal components needed to complete the lower receiver, including the fire control group, hammer, trigger, disconnector, selector, magazine catch, and bolt catch components. The threaded bolt catch pin provides secure retention. All components are mil-spec compatible, ensuring they work seamlessly with standard AR-15 upper assemblies. The included pistol grip completes the ergonomic setup without requiring additional purchases.

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