Diamondback Firearms DB15 Semi-Automatic Rifle – 5.56mm NATO, 16″ Barrel, Black Anodized

Overview

The Diamondback Firearms DB15 Semi-Automatic Rifle delivers professional-grade performance in a modern sporting platform. Chambered in 5.56mm NATO, this versatile AR-15 style rifle features a precision 16-inch chrome moly barrel with a 1:8″ twist rate, ensuring optimal velocity and accuracy with a wide variety of projectile weights. A3 flat-top upper and lower receivers machined from 7075-T6 aluminum guarantee durability and rock-solid alignment for enhanced accuracy. Finished in a hard-coat black anodized surface, the DB15 stands up to tough environments whether you’re on the shooting range or in the field.

Superior Barrel and Gas System

The heart of the DB15 is its 4140 chrome moly steel barrel, rifled with a 1:8″ twist to stabilize bullets from 35 to 77 grains. This barrel is housed within a carbine-length gas system that balances reliability and recoil management, cycling rounds smoothly under a variety of conditions. The A2 flash hider at the muzzle reduces muzzle flash for rapid follow-up shots, while preserving the classic AR silhouette.

Modular M-LOK Rail System

Diamondback outfitted the DB15 with a 12-inch free-floating M-LOK handguard, allowing users to customize their rifle with lights, grips, lasers, and other accessories. The free-floating design eliminates barrel contact from the handguard, improving harmonics and accuracy potential. Picatinny top rail sections at 12, 3, 6, and 9 o’clock positions provide additional mounting points for optics and other mission-critical attachments.

Ergonomics and Furniture

The DB15 features Magpul MOE grip and a Thorsden Featureless GenII FRS-15 carbine stock, delivering comfortable control and minimal profile. The razor-edge MOE grip enhances handling under stress, while the featureless stock design ensures compliance in restricted states without compromising adjustability. A manual thumb safety and low-profile dust cover round out the controls.

State Compliance and Versatility

This rifle meets California and New York compliance requirements through its fixed, featureless stock and lack of pistol grips or flash hiders beyond the factory A2 design. At the same time, it retains full functionality, making it ideal for recreational shooters, home defense, competition, and tactical training. The DB15 can accept standard AR-15 magazines with a 10+1 capacity, and its flat-top upper is optic-ready for red dots, scopes, or backup iron sights.

Precision CNC Machining and Quality Control

Every receiver set on the DB15 is CNC-machined from 7075-T6 aluminum billet, then hard-coat anodized for corrosion resistance. Quality control inspections ensure that barrel alignment, headspace, and gas system timing meet strict tolerances. The carbine-length barrel extension and bolt carrier group interface produce consistent lockup and ejection patterns, reducing wear and tear over tens of thousands of rounds.

Performance Applications

Whether you’re a competitive shooter running 3-gun matches or a first-time rifle owner stepping onto the range, the DB15’s blend of reliability, accuracy, and customization options make it a top choice. Its lightweight, yet rigid construction allows for easy maneuverability, while the comfortable ergonomics reduce shooter fatigue during extended sessions. This rifle excels in varmint hunting, target shooting, and tactical drills alike.

Aftermarket Expansion and Upgradability

The DB15 platform is fully compatible with a vast ecosystem of AR-15 parts and accessories. From trigger upgrades and enhanced charging handles to advanced muzzle devices and optics, you can tailor your DB15 to your exact specifications. Magpul PMAG and other OEM magazines drop in seamlessly, and the M-LOK handguard supports multiple rail attachments for weapons lights and vertical grips.

American Craftsmanship

Manufactured in the USA, the Diamondback Firearms DB15 is backed by the brand’s commitment to value and quality. Each rifle is assembled by skilled technicians and undergoes thorough function testing before leaving the factory. With responsive customer support and a growing dealer network, spare parts and service are never far away.

Maintenance and Care

Routine cleaning and lubrication keep the DB15 running smoothly. The low-profile gas system design simplifies disassembly, and the Mil-Spec AR-15 bolt carrier group can be field-stripped in minutes. Standard cleaning kits for .223/5.56 rifles will service the barrel, chamber, and gas port to maintain optimal cycling and accuracy.

Summary

The Diamondback Firearms DB15 Semi-Automatic Rifle stands out in the modern sporting rifle market by combining a robust 16″ chrome moly barrel, a free-floating 12″ M-LOK rail, Magpul furniture, and featureless compliance in one package. Its precision machining, proven gas system, and upgrade potential make it a smart investment for shooters pursuing versatility, reliability, and performance. Grab your DB15 today and experience the quality of a true American-made platform.