DPMS AR-15 Pistol Lower Build Kit, FDE Gauntlet Arms Polymer Stabilizing Brace

DPMS AR-15 Pistol Lower Build Kit with Gauntlet Arms FDE Brace

This is a complete lower build kit for AR-15 pistols, built on a DPMS DA-15 forged 7075-T6 aluminum receiver with a Gauntlet Arms polymer stabilizing brace in Flat Dark Earth. The kit includes a 31-piece mil-spec lower parts kit, pistol buffer tube, carbine buffer, recoil spring, end plate, castle nut, and all fire control components. Everything you need to complete a functional AR-15 pistol lower except the upper assembly and magazines.

Key Features

• DPMS DA-15 forged 7075-T6 aluminum receiver with MIL-A-8625 Type III Class 2 hardcoat anodize
• Multi-caliber compatible receiver marking supports various caliber uppers
• 31-piece Davidson Defense mil-spec lower parts kit with steel, aluminum, and polymer components
• Gauntlet Arms polymer stabilizing brace in FDE with sling loop attachment
• Standard mil-spec curved trigger and A2 pistol grip
• Pistol receiver extension with carbine-length recoil spring and 3 oz buffer
• US Tactical mil-spec end plate and castle nut included

Perfect For

• Builders creating AR-15 pistol configurations on a budget
• Shooters wanting a multi-caliber compatible lower receiver
• Those preferring polymer braces over tube-only designs
• AR-15 pistol builds in calibers like 5.56 NATO, 300 Blackout, or 9mm

Receiver and Build Quality

The DPMS DA-15 lower receiver is forged from 7075-T6 aluminum and finished with hardcoat anodize per military specification MIL-A-8625 Type III Class 2. This material and finish combination provides durability and corrosion resistance. The multi-caliber marking allows you to pair this lower with uppers chambered in various calibers while maintaining compatibility with standard mil-spec parts.

Complete Lower Parts Kit

The included 31-piece Davidson Defense lower parts kit contains all internal components needed to assemble a functional lower receiver. This mil-spec kit includes the fire control group, trigger, hammer, disconnector, selector, magazine catch, bolt catch, safety lever, and all required pins and springs. Components use phosphate and anodized finishes for corrosion protection.

Pistol Buffer System

The kit features a heavy-duty pistol receiver extension paired with a standard 3 oz carbine buffer and carbine-length recoil spring. This configuration is designed for AR-15 pistol platforms and works with the included Gauntlet Arms brace. The fixed, non-adjustable buffer tube maintains a compact profile while cycling the action reliably.

Gauntlet Arms Stabilizing Brace

The Gauntlet Arms polymer stabilizing brace in Flat Dark Earth is molded from high-strength polymer and mounts directly to the pistol buffer tube. The design includes a sling loop for attachment options. The brace is fixed and non-adjustable, providing a consistent length of pull. This brace is designed for pistol use and helps with one-handed control and stability.

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