Davidson Defense Full House 10.5" 5.56 NATO AR-15 Pistol Build Kit, 10" KeyMod, w/ Gauntlet Arms Brace

Full House 10.5" 5.56 NATO AR-15 Pistol Build Kit, 10" KeyMod, w/ Gauntlet Arms Brace

This is a complete 5.56 NATO AR-15 pistol build kit with everything you need except the lower receiver. It pairs a 10.5-inch nitride-finished barrel with a 7075-T6 upper receiver, mil-spec bolt carrier group, and a Gauntlet Arms stabilizing brace for a compact, maneuverable platform.

Key Features

• 10.5-inch nitride-finished 4150 CrMoV barrel with 1:8 twist rate and 1/2x28 threading
• 7075-T6 aluminum upper receiver with M4 feed ramps and anodized finish
• 10-inch KeyMod handguard for accessory mounting flexibility
• Complete mil-spec bolt carrier group with 9310 alloy steel construction and nitride finish
• Gauntlet Arms polymer stabilizing brace for pistol configuration
• Carbine-length gas system with micro low-profile gas block
• Complete lower parts kit and buffer system included
• AR-15 M4 charging handle and forward assist assembly
• GI birdcage flash hider with crush washer

Perfect For

• Shooters building a compact 5.56 NATO pistol platform
• Home defense or vehicle storage applications
• Shooters wanting a complete kit without a lower receiver
• AR platform builders seeking mil-spec reliability
• Users prioritizing maneuverability in tight spaces

Compact 5.56 NATO Pistol Configuration

This kit delivers a purpose-built 5.56 NATO pistol platform in a compact 10.5-inch barrel length. The nitride finish on the barrel and bolt carrier resists corrosion while maintaining durability under regular use. The 1:8 twist rate stabilizes standard 5.56 ammunition effectively across the full velocity range typical of shorter barrels. KeyMod mounting on the 10-inch handguard gives you flexibility to add optics, lights, or other tactical accessories without rail clutter.

Mil-Spec Component Quality

Every component meets military specifications for reliability and interchangeability. The 7075-T6 upper receiver provides the strength needed for repeated firing cycles. The complete bolt carrier group uses 9310 alloy steel with nitride hardening to handle the pressures of 5.56 NATO cartridges. The lower parts kit includes all trigger, hammer, selector, and catch components needed to complete a stripped lower receiver. This approach ensures compatibility with any standard AR-15 lower receiver you source separately.

Gas System and Cycling

The carbine-length gas system with micro low-profile gas block optimizes cycling efficiency for the shorter 10.5-inch barrel. Carbine-length systems are tuned for barrels in this length range and deliver reliable bolt carrier movement without excessive wear. The standard carbine recoil buffer and spring manage recoil impulse while maintaining consistent cycling characteristics.

Gauntlet Arms Brace and Pistol Setup

The Gauntlet Arms polymer stabilizing brace provides a wrist support surface while keeping the platform in pistol configuration. The heavy-duty pistol buffer tube is sized specifically for pistol-length builds and integrates with the brace assembly. This configuration delivers a compact, controllable platform suitable for close-quarters use.

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