DPMS AR-15 Pistol Lower Build Kit, SBA5 Stabilizing Brace

DPMS AR-15 Pistol Lower Build Kit with SBA5 Stabilizing Brace

This is a complete lower build kit for AR-15 pistol platforms. It includes a DPMS DA-15 forged 7075-T6 aluminum lower receiver paired with a Davidson Defense 31-piece mil-spec lower parts kit, buffer system components, and an SB Tactical SBA5 stabilizing brace. The lower receiver is marked for multi-caliber compatibility and finished in black hardcoat anodized per MIL-A-8625 Type III Class 2 specifications. The kit ships with a standard mil-spec curved trigger, A2 pistol grip, and all components needed to complete the lower receiver assembly.

Key Features

• DPMS DA-15 forged 7075-T6 aluminum lower receiver with black hardcoat anodized finish
• Davidson Defense 31-piece mil-spec lower parts kit with steel, aluminum, and polymer components
• SB Tactical SBA5 adjustable pistol stabilizing brace with nylon strap
• 6-position heavy-duty machined aluminum buffer tube with Type II anodized finish
• Standard AR-15 carbine buffer and recoil spring included
• Mil-spec trigger group with curved trigger shoe and trigger guard
• Mil-spec A2 pistol grip in black
• US Tactical receiver end plate and AR-15 carbine castle nut
• Multi-caliber lower receiver compatible with standard mil-spec AR-15 components
• Serialized DPMS lower receiver

Perfect For

• Builders creating AR-15 pistol platforms with adjustable brace support
• Shooters wanting a complete lower assembly without selecting individual components
• Pistol-configured builds requiring mil-spec compatibility and reliability
• Users preferring the SBA5 brace for adjustable stabilization and comfort

DPMS DA-15 Lower Receiver

The DPMS DA-15 lower receiver is forged from 7075-T6 aluminum and finished in black hardcoat anodized per military specifications. This platform uses standard mil-spec AR-15 component compatibility, meaning it accepts any standard AR-15 upper assembly. The receiver is marked for multi-caliber use and includes selector markings for SAFE and FIRE positions. As the serialized component of this kit, the lower receiver is the regulated firearm element.

SB Tactical SBA5 Stabilizing Brace

The SBA5 is an adjustable pistol stabilizing brace that mounts to the carbine-length buffer tube. It features a streamlined design with impact-resistant polymer construction and an adjustable nylon stabilizing strap. The brace offers six adjustment positions on the buffer tube, allowing customization for different shooter preferences and hand sizes. The SBA5 is designed for wrist stabilization during pistol-configured shooting.

Complete Lower Parts Kit Integration

The Davidson Defense 31-piece mil-spec lower parts kit provides all internal lower receiver components. This includes the fire control group with standard mil-spec trigger, hammer, disconnector, selector switch, magazine catch assembly, bolt catch, and all required pins and springs. The kit uses phosphate and anodized finishes across steel and aluminum components. The A2 pistol grip is included in black.

Buffer System and Receiver Extension

The kit includes a Davidson Defense heavy-duty machined aluminum buffer tube with 6-position adjustment capability. The tube measures 1.145 inches outer diameter and 7.15 inches in length, finished in Type II anodized black. A standard AR-15 carbine buffer (3 oz.) and recoil spring are included. The US Tactical receiver end plate and AR-15 carbine castle nut complete the buffer system assembly.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. Lower receiver not included. This is a lower build kit. Upper receiver assembly not included.