Diamondback DB15 300 Blackout Semi-Automatic AR15 Rifle – California AR-15 Rifle

About this product

The Diamondback DB15 chambered in 300 AAC Blackout delivers reliable performance with a 16-inch melonite-coated barrel and Magpul furniture. This California-compliant rifle features a pistol-length gas system and forged 7075 T6 aluminum receivers for durability. Ships to all 50 states. Available nationwide.

Engineered for precision and built to last, the Diamondback DB15 in 300 AAC Blackout represents a robust platform suitable for California shooting enthusiasts. This rifle combines American manufacturing with thoughtful design elements that appeal to knowledgeable firearm owners seeking a dependable AR-15 configuration.

The DB15 utilizes a direct impingement gas system with high-quality CNC machined components throughout its construction. Its 16-inch heavy contour barrel features melonite coating over 4140 chrome-moly steel, providing enhanced wear resistance and corrosion protection. The free-float design contributes to consistent accuracy by minimizing barrel interference.

• Manufacturer: Diamondback
• Model: DB15
• Caliber: 300 AAC Blackout
• Barrel Length: 16 inches
• Barrel Twist: 1:8″ RH
• Gas System: Pistol-length
• Upper Receiver: A3 flattop forged 7075 T-6 aluminum
• Lower Receiver: Diamondback standard forged 7075 T-6 aluminum
• Handguard: 12″ KeyMod rail
• Grip: Magpul MOE
• Stock: Magpul MOE carbine stock
• Muzzle Device: A2 .30 caliber flash hider (5/8 x 24)
• Bolt Carrier Group: Shot-peened magnetic particle inspected mil-spec 8620
• Weight: 6.62 pounds
• Length (collapsed): 32.25 inches
• Length (extended): 35.5 inches

This rifle arrives with a 30-round PMAG magazine, cable lock, and owner’s manual. The Magpul CTR buttstock and MOE pistol grip provide ergonomic control, while the Diamondback 12-inch KeyMod handguard offers ample mounting real estate for accessories. The black hardcoat anodized finish ensures a durable exterior that withstands regular use.

California firearm regulations require specific compliance modifications for AR-15 rifles, and this model is available in configurations that meet those requirements for customers in Los Angeles, San Diego, and Sacramento. All firearms ship to your local California FFL dealer for proper transfer and background check completion.