DPMS AR-15 Pistol Lower Build Kit, Straight Trigger Shoe, SBA4 Adjustable Stabilizing Brace

DPMS AR-15 Pistol Lower Build Kit, Straight Trigger Shoe, SBA4 Adjustable Stabilizing Brace

This lower build kit is built around a DPMS DA-15 lower receiver, forged from 7075-T6 aluminum and finished in black hardcoat anodizing to MIL-A-8625 Type III Class 2 spec, marked for multi-caliber use. A Davidson Defense 31-piece Gen 2 match-grade Lower Parts Kit, Mil-Spec A2 grip, carbine buffer-system components, and an SB Tactical SBA4 adjustable pistol stabilizing brace round out the kit.

Key Features

• DPMS DA-15 forged 7075-T6 aluminum lower receiver
• Black hardcoat anodized, MIL-A-8625 Type III Class 2
• Davidson Defense 31-piece Gen 2 match-grade Lower Parts Kit with 3.5-lb skeletonized straight trigger
• Mil-Spec A2 grip and carbine buffer-system components included
• SB Tactical SBA4 adjustable pistol stabilizing brace with integrated stabilizing strap and QD sling socket

Lower Receiver

The receiver is a DPMS DA-15, forged from 7075-T6 aluminum and finished in black hardcoat anodizing, meeting the MIL-A-8625 Type III Class 2 anodizing specification for a durable, wear-resistant surface. It's marked "Multi-Cal" and built to standard AR-15 patterns throughout, including the magazine well and buffer extension interface, with the selector area marked SAFE/FIRE.

Lower Parts Kit and Trigger

At the heart of this kit is a Davidson Defense 31-piece Gen 2 match-grade Lower Parts Kit, built for standard Mil-Spec AR-15 lower receivers and made from a mix of steel, aluminum, and polymer. The centerpiece is a single-stage trigger with a straight, skeletonized shoe, machined from steel and finished in black oxide, breaking at a light 3.5-pound pull weight suited to precision shooting and competition-oriented builds. The complete fire control group is included alongside the trigger, and a Mil-Spec A2 grip molded from black polymer rounds out the kit's ergonomics.

Buffer System

Behind the buffer tube assembly sits a Mil-Spec heavy-duty six-position carbine buffer tube, holding a standard carbine buffer weighing 3 ounces and a standard recoil spring. A US Tactical AR-15/M16 Mil-Spec receiver end plate and AR-15 carbine castle nut secure the entire buffer tube assembly to the back of the receiver.

Stabilizing Brace

Capping off the build is an SB Tactical SBA4 adjustable pistol stabilizing brace, finished in black in a collapsible, adjustable design, built for a Mil-Spec carbine buffer tube and matching the buffer tube included with this kit. It features an integrated stabilizing strap along with an integrated QD sling socket for attaching a sling.

Follow all manufacturer instructions and safe handling practices.

Ensure compliance with all applicable federal, state, and local laws.

This is a serialized firearm component. Transfer must be conducted through a licensed firearms dealer in accordance with all applicable federal, state, and local laws.