DPMS AR-15 Pistol Lower Build Kit with Straight Trigger and FDE SBA5 Brace

DPMS AR-15 Pistol Lower Build Kit with SBA5 Brace, FDE

This is a complete lower build kit designed for AR-15 pistol platforms. It includes everything needed to assemble a functional lower receiver except the serialized lower itself. The kit pairs a DPMS DA-15 forged aluminum lower receiver with a Davidson Defense Match Grade lower parts kit, a mil-spec heavy-duty buffer tube system, and an SB Tactical SBA5 adjustable stabilizing brace in Flat Dark Earth.

Key Features

• DPMS DA-15 forged 7075-T6 aluminum lower receiver with black hardcoat anodized finish
• Davidson Defense Match Grade lower parts kit with 31 components including single-stage straight trigger shoe
• SB Tactical SBA5 adjustable stabilizing brace in FDE with integrated strap
• Mil-spec heavy-duty 6-position carbine buffer tube with standard carbine buffer and recoil spring
• US Tactical mil-spec receiver end plate and castle nut included
• Mil-spec A2 grip and skeletonized trigger design with 3.5 lb pull weight
• Standard AR-15 magazine well and buffer extension interface for broad component compatibility

Perfect For

• Builders constructing AR-15 pistol configurations with adjustable brace systems
• Users seeking match-grade trigger components in a complete lower assembly package
• Shooters who prefer the ergonomics of an SBA5 brace with collapsible adjustment
• Budget-conscious builders looking for quality forged aluminum construction with proven components

Complete Lower Assembly Configuration

This kit ships as a complete lower assembly ready to pair with an upper receiver. The SBA5 brace provides adjustable length of pull and an integrated stabilizing strap for improved control and handling. The match-grade lower parts kit delivers a clean 3.5 pound trigger break with a straight trigger shoe design, offering a consistent reset for both precision and rapid-fire applications. The forged 7075-T6 aluminum lower receiver meets mil-spec standards and uses MIL-A-8625 Type III Class 2 anodizing for durability.

Mil-Spec Buffer System and Compatibility

The included mil-spec heavy-duty buffer tube system consists of a 6-position carbine tube, standard carbine buffer at 3 ounces, and a standard carbine recoil spring. This configuration works with the SBA5 brace and maintains compatibility with standard AR-15 upper receivers and components. The receiver end plate and castle nut complete the buffer tube assembly, and the kit uses standard AR-15 pattern magazine well and buffer extension interfaces.

Davidson Defense Match Grade Lower Parts Kit

The 31-piece Match Grade lower parts kit includes all internal components required for lower receiver assembly. The single-stage trigger features a skeletonized straight trigger shoe with a 3.5 pound pull weight and black oxide finish. All trigger components, hammer, disconnector, selector, magazine catch, and bolt catch components are included with the necessary pins and springs for proper function.

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