The Diamondback DB15D Copperhead in .223 Wylde (MPN DB1780H631) is a semi-automatic AR-15 rifle built to shoot both 5.56 NATO and .223 Remington accurately, pairing an 18-inch barrel with a 1-in-8 twist rate. Diamondback Firearms builds this DB15 configuration under the Copperhead designation, feeding from a detachable magazine with a 30+1 capacity. It ships with one 30-round PMAG and no sights installed, leaving the rifle ready for an optic. Among AR-platform rifles in the AR rifles category, the DB15D Copperhead favors shooters who want the dual-caliber flexibility of .223 Wylde in an 18-inch-barreled AR-15.

Key Specifications

• Chambered in .223 Wylde, accepting 5.56 NATO or .223 Rem, with a 1-in-8 twist rate.
• Features an 18-inch barrel.
• Feeds from a detachable magazine with a 30+1 capacity.
• Ships with one 30-round PMAG.
• Ships with no sights installed, ready for an optic.
• Ships at approximately 13.95 pounds.
• Receiver set is forged 7075-T6 aluminum for a durable, mil-spec AR-15 platform.
• Handguard is a 15-inch M-LOK Anti-Rotation S-Rail with full Picatinny top rail.
• Fitted with a Magpul CTR stock in FDE.
• Grip is a Magpul MOE K2 in FDE.

Frequently Asked Questions

What ammunition can this rifle shoot? Both 5.56 NATO and .223 Remington, thanks to its .223 Wylde chamber.

Does this rifle come with sights? No, it ships without sights, ready for an optic to be mounted.

Buy the Diamondback DB15D Copperhead

The dual-caliber flexibility of .223 Wylde in an 18-inch-barreled AR-15 is exactly what the DB15D Copperhead delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.