Diamondback DB15 300 Blackout Rifle with M-LOK Rail – California AR-15 Rifle

About this product

The Diamondback DB15 300 Blackout Rifle features a 16-inch melonite-coated barrel and 12-inch M-LOK handguard for versatile accessory mounting. This American-made AR-15 platform rifle is built with forged 7075 T6 aluminum receivers and includes a Magpul MOE stock and grip. Ships to all 50 states. Available nationwide.

Engineered for precision and reliability, the Diamondback DB15 in 300 AAC Blackout delivers consistent performance with its robust construction and thoughtful design elements.

This rifle incorporates a pistol-length gas system that optimizes cycling with the 300 Blackout cartridge. The free-float M-LOK handguard provides ample real estate for mounting lights, grips, and other accessories while maintaining a slim profile.

Key Specifications:

• Manufacturer: Diamondback
• Model: DB15
• Caliber: 300 AAC Blackout
• Barrel Length: 16 inches
• Barrel Twist: 1:8″ RH
• Gas System: Pistol-length
• Handguard: 12″ M-LOK rail
• Upper Receiver: A3 flattop forged 7075 T-6 aluminum
• Lower Receiver: Forged 7075 T-6 aluminum
• Bolt Carrier Group: Shot-peened magnetic particle inspected mil-spec 8620
• Muzzle Device: A2 .30 caliber flash hider (5/8 x 24)
• Stock: Magpul MOE carbine
• Grip: Magpul MOE
• Magazine: 300 Blackout Gen 3 PMAG 30-round
• Weight: 6.62 pounds
• Length (collapsed): 32 1/4 inches
• Length (extended): 35 1/2 inches

The melonite-coated 4140 chrome-moly barrel enhances durability and corrosion resistance, while the forged aluminum receivers provide a solid foundation for the platform. California firearm enthusiasts in Sacramento will appreciate how this rifle’s design accommodates compliance modifications while maintaining core functionality.

Diamondback manufactures all components in the United States using CNC machining processes that ensure tight tolerances and consistent quality. The carbine-length buffer system works in harmony with the pistol-length gas system to provide reliable operation across various ammunition types.

This rifle ships with one 30-round magazine, cable lock, and owner’s manual. California customers must arrange transfer through a licensed FFL dealer following all state and local regulations.