Brand: Diamondback Firearms
Model: Obsidian DB15
Platform: AR-15
Caliber: .300 Blackout
Gas System: Direct Impingement
Barrel Length: 10"
Capacity: 30rds
Muzzle Thread: 5/8 x 24
Muzzle Device: Obsidian Muzzle Brake
Stock Description: SB Tactical SBA5 Brace
Stock Material: Polymer
Grip Description: Magpul MOE K2+ Grip
Grip Material: Polymer
Furniture Finish: Black
Upper Receiver Material: 7075-T6 Aluminum
Upper Receiver Finish: ODG
Lower Receiver Material: 7075-T6 Aluminum
Lower Receiver Finish: ODG
Rail Description: 9" Anti-Rotation Rail
Rail Material: Aluminum
Rail Finish: ODG
Attachment Style: M-LOK
Safety: 2-Position Thumb Safety
Bolt Carrier Group: Yes
Charging Handle: Yes
OAL: 24" - 29.5"
Weight: 6.25 lbs
Includes: One 30rd PMAG

Features

The Diamondback Firearms Obsidian DB15 10" .300 Blackout AR pistol is a compact, high-performance platform built for reliability and versatility in a maneuverable package. Chambered in .300 Blackout and featuring a 10-inch barrel, it is well suited for both supersonic and subsonic ammunition, making it an excellent option for close-range shooting and suppressor use. Forged aluminum receivers provide a lightweight yet durable foundation, while the AR-pattern design maintains familiar controls and broad component compatibility.

Equipped with a free-float M-LOK handguard, the DB15 offers ample space for mounting lights, lasers, grips, and other accessories without affecting barrel harmonics. Its compact configuration enhances maneuverability while preserving stability and control, making it well suited for range use, training, and defensive applications. Designed for dependable performance and adaptability, the Obsidian DB15 delivers the versatility and reliability expected from a modern .300 Blackout AR platform.

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All NFA Rules Apply

These items are controlled by the U.S. Government and authorized for export only to the country of ultimate destination for use by the ultimate consignee or end-user(s) herein identified. They may not be resold, transferred, or otherwise disposed of, to any other country or to any person other than the authorized ultimate consignee or end-user(s), either in their original form or after being incorporated into other items, without first obtaining approval from the U.S. government or as otherwise authorized by U.S. law and regulations.

Magazines will be removed from firearms when shipping to states with magazine capacity restrictions.

WARNING: Handling firearms or firearms parts can expose you to lead and other petroleum products known to the State of California to cause cancer, birth defects, or other reproductive harm. Wash hands thoroughly after handling. For more information go to www.p65warnings.ca.gov (CA Health and Safety Code Section 25249.6).