The Diamondback DB15 Obsidian is a modern AR-platform rifle configured for general-purpose range use, training, and defensive applications. It is chambered for .223 Rem / 5.56 NATO and built with a mid-length gas system and a threaded 16″ barrel. The rifle ships with Magpul furniture and a 30-round Magpul Gen M3 PMAG for immediate use in the field or on the range. Construction uses forged 7075-T6 aluminum receivers and a 15″ M-LOK anti-rotation rail for accessory flexibility.
Key Specifications
- The rifle is chambered in .223 Rem / 5.56 NATO.
- The barrel is a 16" Diamondback 4150 Chrome-Moly-Vanadium with a 1:8 twist and a black nitride finish with FDE Cerakote.
- Gas operation is via a mid-length direct impingement system.
- The handguard is a 15" M-LOK Anti-Rotation V4 S-Rail with full Picatinny and QD mounts.
- Receivers are made from forged 7075 T-6 aluminum.
- Furniture includes a Magpul CTR stock and a Magpul MOE K2 grip in Flat Dark Earth.
- The rifle includes a Magpul Gen M3 PMAG, 30-round magazine (Medium Coyote Tan).
- The muzzle device is the DB Obsidian muzzle brake and the barrel is threaded 1/2 x 28.
- Action and bolt carrier: Semi-Auto with a shot-peened, magnetic particle inspected Mil-Spec 8620 carrier.
- Standard trigger is a Mil-Spec trigger assembly.
The DB15 Obsidian combines durable materials and common, serviceable components to deliver a reliable AR platform with modern ergonomics and accessory compatibility. Its 15″ M-LOK rail and threaded 16″ barrel give a balance of handling and modularity for range work, training, and general-purpose use while Magpul furniture provides familiar ergonomics and a factory-supplied magazine eases initial setup.
Product information is supplied by the manufacturer and/or distributor and may be automatically formatted or enhanced using AI for clarity and consistency. While we strive for accuracy, specifications, features, and included items may change without notice. Always verify details using the manufacturer’s official documentation and the information shown on this product page before purchase or use.
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