Davidson Defense Warden 10.5" 5.56 NATO AR-15 Pistol Build Kit, Keymod Handguard, 1:7, w/ SBA3 Brace

Warden 10.5" 5.56 NATO AR-15 Pistol Build Kit, Keymod Handguard, 1:7, w/ SBA3 Brace

This is a complete pistol build kit designed around a 10.5-inch carbine-length barrel in 5.56 NATO. It includes everything needed to complete a lower receiver except the serialized lower itself. The setup pairs a carbine gas system with a freefloat Keymod handguard and SBA3 brace for a compact, modular platform.

Key Features

• 10.5-inch 4150 CrMoV barrel with 1:7 twist rate and carbine gas system
• Trinity Force KMX 10-inch Keymod freefloat handguard for accessory mounting
• SB Tactical SBA3 adjustable pistol stabilizing brace
• Complete bolt carrier group with 9310 alloy steel construction
• Mil-spec 6-position buffer tube with standard carbine recoil spring and 3 oz buffer
• AR-15 M4 upper receiver with M4 feed ramps
• Micro low-profile gas block for compact profile
• 1/2x28 muzzle threads with GI birdcage flash hider included

Perfect For

• Shooters building a short-barreled pistol platform in 5.56 NATO
• Compact home defense or training configurations
• Builders wanting a modular Keymod accessory ecosystem
• Those preferring a brace-equipped setup for maneuverability

Carbine-Length Gas System and Cycling

This build uses a carbine-length gas system paired with the 10.5-inch barrel. The shorter gas tube and barrel combination creates a balanced cycling profile designed for the compact platform. The micro low-profile gas block keeps the profile minimal while maintaining reliable operation.

Freefloat Keymod Handguard Design

The Trinity Force KMX handguard is a 10-inch freefloat rail that isolates the barrel from any contact with the upper receiver. This design supports consistent accuracy by eliminating handguard-to-barrel interaction. The Keymod mounting system provides a wide range of accessory options for lights, grips, and other attachments.

SBA3 Brace Configuration

The SBA3 is an adjustable pistol stabilizing brace that provides multiple positioning options. It features adjustable length of pull and can be configured for different shooting styles. The brace ships as part of this kit and supports the compact pistol platform design.

Complete Kit Component Set

This full build kit includes the upper assembly, bolt carrier group, charging handle, lower parts kit, buffer tube, buffer, recoil spring, end plate, and castle nut. The lower receiver is not included. All components are ready to assemble once a stripped lower receiver is obtained.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. Lower receiver not included. Do not attach a stock unless compliant with applicable laws.