The Diamondback DB15 Obsidian is a compact AR-style semi-automatic pistol configured around an 11.50″ barrel and chambered for 5.56 NATO. It pairs a threaded 11.50″ 4150 Chrome-Moly Vanadium barrel finished in black nitride with an 11″ M-LOK anti-rotation handguard and SB Tactical SBA5 pistol brace. The carbine-length gas system, Mil-Spec bolt carrier group with magnetic particle inspection and a forged 7075 T-6 aluminum receiver set provide a familiar, rugged AR platform in a compact form. This configuration ships with a 30-round Magpul Gen M3 PMAG and an Obsidian muzzle brake.
Key Specifications
- Chambered in 5.56 NATO.
- The barrel measures 11.50″ and is made from 4150 Chrome Moly Vanadium.
- The barrel finish is Black Nitride.
- Rate of twist is 1:8″ RH.
- Included magazine capacity is 30 + 1.
- Handguard is an 11″ M-LOK Anti-Rotation V4 S-Rail with full Picatinny and QD mounts.
- Brace is an SB Tactical SBA5 pistol brace.
- Action type is Semi-Auto with a carbine-length direct impingement gas system.
- The muzzle device is an Obsidian Muzzle Brake (1/2 x 28).
- Receivers are Forged 7075 T-6 Aluminum.
The DB15 Obsidian delivers a compact, utility-focused AR platform for range use and compact defensive carry where permitted. With durable materials, a threaded, nitride-finished barrel and an 11″ M-LOK rail for accessories, it balances maneuverability and modularity while retaining familiar AR controls and ergonomics.
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