The Diamondback DB15 (Diamondback part no. DB2377K001) is a 5.56mm/.223 Rem short-barrel rifle built on an 11.5-inch barrel with a 1:8-inch twist rate, finished in black. Diamondback ships the DB15 with a Magpul 30-round PMag and Magpul Backup flip sights. The DB15 favors shooters who want a compact, maneuverable AR-platform SBR with a proven twist rate for common 5.56 loadings.

Key Specifications

• Rated for .223 REM/5.56 NATO ammunition.
• Wears an 11.5-inch barrel cut with a 1:8-inch twist rate.
• Feeds from a 30-round PMag, included.
• Equipped with Magpul Backup flip sights.
• Measures 32.75 inches overall.
• Operates as a semi-automatic rifle.

Frequently Asked Questions

Is this an NFA item? Yes. As a short-barrel rifle, it's a Title II firearm requiring an approved ATF Form 4 and transfer through an NFA-licensed dealer.

What magazine does it ship with? A 30-round Magpul PMag.

Buy the Diamondback DB15 SBR

This is a Title II item regulated under the National Firearms Act. Purchase requires an approved ATF Form 4, no federal transfer tax, and transfer through a licensed NFA (SOT/Class 3) dealer, with an extended federal approval wait before delivery. Order through Diamondback Firearms‘s short-barrel rifles lineup and our Lubbock, Texas team will walk you through the transfer process.