DPMS AR-15 Rifle Lower Build Kit, SOPMOD Style Collapsible Stock

DPMS AR-15 Rifle Lower Build Kit, SOPMOD Style Collapsible Stock

This is a complete lower build kit designed to get your AR-15 platform rifle ready to pair with an upper assembly. You're getting a serialized DPMS DA-15 forged aluminum lower receiver, a 31-piece mil-spec lower parts kit, a 6-position carbine buffer tube, standard carbine buffer and recoil spring, and a SOPMOD style collapsible stock with integrated storage compartments and QD mounts.

Key Features

• DPMS DA-15 forged 7075-T6 aluminum lower receiver with mil-spec compatibility
• 31-piece Davidson Defense mil-spec lower parts kit with fire control group
• 6-position adjustable SOPMOD collapsible stock with storage compartments
• Davidson Defense heavy-duty mil-spec carbine buffer tube with Type II anodize
• Standard mil-spec trigger, trigger guard, A2 pistol grip, end plate, and castle nut included
• Integrated QD sling mounts on stock for quick attachment
• Multi-caliber marked receiver accepts standard AR-15 upper assemblies

Perfect For

• Builders looking for a complete lower assembly without an upper receiver
• Shooters who want a mil-spec platform with proven DPMS reliability
• Those preferring the SOPMOD stock for adjustability and storage capability
• Rifle builds requiring standard AR-15 compatibility

DPMS DA-15 Forged Lower Receiver

The DPMS DA-15 lower receiver is machined from 7075-T6 aluminum and forged for strength. It's finished in black hardcoat anodized per MIL-A-8625 Type III Class 2 specifications. The receiver accepts standard mil-spec AR-15 components and is marked for multi-caliber use, meaning you can pair it with 5.56, 300 Blackout, 6.8 SPC, or other standard AR-15 upper assemblies. This is a serialized component, so it's the registered part of your firearm.

Complete Mil-Spec Lower Parts Kit

The 31-piece Davidson Defense lower parts kit includes everything needed to complete the receiver: a standard mil-spec curved trigger, hammer, disconnector, selector switch, magazine catch, bolt catch, trigger guard, and all required pins and springs. The kit uses a mix of steel, aluminum, and polymer materials with phosphate and anodized finishes for durability. All components are mil-spec specification, so they'll work with any standard AR-15 lower receiver.

SOPMOD Stock with Storage and QD Mounts

The SOPMOD style collapsible stock is made from nylon reinforced polymer and adjusts across six positions for length of pull customization. It includes integrated QD mounts for quick sling attachment and has a storage compartment in the buttstock for carrying small items. The stock connects to the included 6-position mil-spec carbine buffer tube, which is constructed from 6061 aluminum and Type II anodized. The buffer tube is heavy-duty machined and weighs 3.8 oz.

Buffer System and Recoil Control

This kit includes a standard AR-15 carbine buffer weighing 3 oz. and a standard carbine recoil spring. Together with the buffer tube, these components manage the cycling and recoil impulse of your rifle. The entire buffer system is mil-spec carbine-length, so it pairs with any standard AR-15 upper assembly.

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