Davidson Defense Full House 10.5" 5.56 NATO AR-15 Pistol Build Kit, 10" KeyMod, 1:8, w/ SBA3 Brace

Full House 10.5" 5.56 NATO AR-15 Pistol Build Kit, 10" KeyMod, 1:8, w/ SBA3 Brace

This is a complete AR-15 pistol build kit designed to give you everything needed to assemble a functional 5.56 NATO platform except the serialized lower receiver. The 10.5-inch barrel delivers the compact profile pistols are known for, while mil-spec components throughout ensure reliability and compatibility. You get a 7075-T6 upper receiver, nitride-finished barrel, KeyMod handguard, SBA3 brace, and a full complement of lower parts, buffer system, and charging components. This kit ships as a complete upper assembly paired with all the components required to finish a lower receiver, making it a straightforward build for anyone comfortable with basic assembly.

Key Features

• 10.5-inch 4150 CrMoV nitride barrel with 1:8 twist rate and M4 feed ramps
• 7075-T6 aluminum upper receiver with anodized finish and forward assist
• 10-inch KeyMod handguard for modular accessory mounting
• SBA3 adjustable pistol stabilizing brace included
• Complete mil-spec lower parts kit with buffer tube, buffer, and recoil spring
• 9310 bolt carrier group with nitride finish, made in the USA
• M4 carbine charging handle and A2 flash hider with crush washer
• Carbine-length gas system with low-profile gas block

Perfect For

• Shooters building their first AR-15 pistol platform
• Those seeking a compact 5.56 NATO configuration for home defense
• Builders who want all major components in one kit
• Pistol shooters transitioning to modular AR platforms
• Competitors and recreational shooters who prefer shorter profiles

SBA3 Pistol Brace Configuration

This kit ships with the SB Tactical SBA3 adjustable pistol stabilizing brace, which provides a stable shooting platform while maintaining the pistol classification. The brace is adjustable for length of pull and includes a storage compartment. The configuration is designed for shooters selecting their own final setup based on their intended use and local regulations. The SBA3 is one of the most popular braces on the market and offers genuine functionality for both accuracy and comfort during extended shooting sessions.

KeyMod Accessory Ecosystem

The 10-inch KeyMod handguard supports the modular KeyMod mounting standard, allowing you to add lights, grips, rail sections, and other accessories without replacing the handguard. KeyMod slots are positioned along the top, sides, and bottom for flexible mounting options. This gives you the ability to customize the rifle as your needs evolve without committing to a single fixed rail system.

Nitride Barrel and Mil-Spec Reliability

The 10.5-inch barrel uses 4150 CrMoV steel with a nitride finish, which provides excellent corrosion resistance and durability. The 1:8 twist rate stabilizes a wide range of 5.56 NATO ammunition, from lighter 55-grain rounds to heavier match-grade loads. The government profile keeps weight reasonable while maintaining structural integrity, and the M4 feed ramps ensure smooth feeding from any mil-spec magazine.

Complete Build Kit Component Set

This kit includes everything except the lower receiver. You get the upper assembly with barrel and handguard, the bolt carrier group, charging handle, complete lower parts kit, buffer tube, buffer, recoil spring, castle nut, and end plate. Lower receiver not included.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. Ships without a brace. Do not attach a stock unless compliant with applicable laws.