Diamondback DB15 Obsidian 5.56 NATO 16″ OD Green

About this product

The Diamondback DB15 Obsidian is a feature-rich semi-automatic rifle built around a forged 7075 T-6 aluminum receiver set and a mid-length gas system. It ships in OD Green Cerakote finish and is configured with ambidextrous controls, a 15″ M-LOK anti-rotation handguard with full Picatinny, and a threaded 16″ barrel. Standard furniture includes a Magpul CTR stock, a Magpul MOE K2 grip, and a 30-round PMAG. The package is aimed at shooters looking for a modern, adaptable AR-style platform for range use and practical precision shooting.

Key Specifications

• Chambered in 5.56 NATO (.223 Rem).
• The barrel measures 16 inches with a 1:8 right-hand twist.
• Feeding is via a 30 + 1 capacity magazine configuration.
• The unloaded weight is approximately 6.60 lbs.
• Finished in OD Green Cerakote.
• Features a 15-inch M-LOK anti-rotation S-Rail with full Picatinny and integrated QD mounts.
• Equipped with a Magpul CTR stock and Magpul MOE K2 grip.
• Includes an Obsidian muzzle brake (1/2 x 28).
• Built on a forged 7075 T-6 aluminum receiver.
• Semi-auto action with a mid-length gas system and a shot-peened Mil-Spec 8620 carrier BCG.

The DB15 Obsidian combines contemporary controls and ergonomic furniture with a robust receiver and reliable gas/BCG components to deliver a balanced, adaptable platform for range work, competition-style practice, or duty/recreational use. Its 15″ M-LOK rail and 16″ threaded barrel allow for straightforward accessory mounting and muzzle device options, while ambidextrous controls and Magpul furniture provide practical ergonomics for a wide range of shooters.

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