The Diamondback Firearms DB15 stripped lower receiver (part no. DB2210R001) gives builders a multi-caliber AR-15 lower from an established American AR-platform manufacturer. Sold stripped, it ships with no internal fire-control parts installed, so you choose the trigger, safety, and furniture for your build. It is a straightforward, no-frills option for shooters who want a Diamondback lower as the foundation for a custom AR-15.

Key Specifications

• Built as a multi-caliber receiver compatible with a range of AR-15-pattern chamberings.
• Sold as a stripped lower receiver, so no internal fire-control parts are installed.
• Runs a semi-auto action, firing one round per trigger pull with standard AR-15 components.
• Ships at a light 1.05-pound shipping weight, keeping freight costs low for a parts order.
• Forged from 7075-T6 aluminum, the industry-standard alloy for AR-15 receiver durability.
• Finished in matte black hardcoat anodizing for wear and corrosion resistance.
• Precision-machined to accept standard mil-spec AR-15 components.
• Compatible with .223 Remington, 5.56 NATO, and .300 Blackout chamberings.
• Ships in compact packaging measuring 5.25 x 3.25 inches.

Frequently Asked Questions

Does this lower include a trigger or other internal parts? No, it ships stripped, so you supply the fire-control group, buffer tube, and grip of your choice.

Is this receiver limited to one caliber? No, it is built as a multi-caliber receiver compatible with a range of AR-15-pattern chamberings.

Will standard AR-15 parts kits fit this receiver? Yes, it uses standard AR-15 dimensions, so mil-spec parts kits and furniture already on the market will fit.

Buy the Diamondback Firearms DB15 Stripped Lower Receiver

Order this Diamondback Firearms DB15 stripped lower receiver from our Lubbock, Texas gun shop for fast, insured shipping to your FFL, and start your custom AR-15 build on a proven foundation. Browse our full selection of AR15 lower receivers for more build options.