Diamondback DB15 Obsidian Series 6mm ARC Rifle – 18″ Barrel, 15″ M-LOK, 26rd Magazine

The Diamondback DB15 Obsidian Series in 6mm ARC delivers a precision-engineered AR-15 platform built for serious shooters who demand accuracy, durability, and premium components straight out of the box. Chambered in the increasingly popular 6mm ARC cartridge, this rifle is optimized for long-range performance and versatility.

At its core is an 18-inch medium-profile 4150 CrMoV barrel with a 1:7.5 right-hand twist and a Black Nitride finish, paired with a mid-length direct impingement gas system for smooth, reliable cycling and reduced felt recoil. The shot-peened, Magnetic Particle Inspected Mil-Spec 8620 steel bolt carrier group ensures consistent, battle-tested reliability.

Built on a forged 7075-T6 aluminum A3 flat-top upper and a matching forged 7075-T6 aluminum lower, this rifle is lightweight yet exceptionally strong. The 15-inch M-LOK Anti-Rotation V4 S-Rail handguard features full Picatinny top rail and integrated QD sling mounts, giving you a wide, unobstructed platform for accessories and optics.

Diamondback didn’t cut corners on furniture either. The DB15 Obsidian comes equipped with a Magpul MOE K2 grip, Magpul CTR Carbine Stock, and Magpul MOE Enhanced Trigger Guard — a premium furniture package that enhances control and ergonomics right from the factory. The DB Obsidian Muzzle Brake (5/8×24 thread pitch) tames muzzle rise for faster follow-up shots, while the included 26-round metal magazine means you’re ready to go the moment it ships.

Finished in a sleek black hardcoat anodize, the DB15 Obsidian weighs just 6.8 lbs and collapses to 35 inches for easy transport and storage, extending to 38.25 inches for a full shooting position.

**Key Specifications:**
– **Caliber:** 6mm ARC
– **Barrel:** 18″ Medium, 4150 CrMoV, 1:7.5 RH Twist, Black Nitride
– **Gas System:** Mid-Length Direct Impingement
– **BCG:** Shot-Peened MPI Mil-Spec 8620 Carrier
– **Upper/Lower:** Forged 7075-T6 Aluminum
– **Handguard:** 15″ M-LOK Anti-Rotation V4 S-Rail w/ Full Picatinny & QD Mounts
– **Stock:** Magpul CTR Carbine Stock
– **Grip:** Magpul MOE K2
– **Trigger Guard:** Magpul MOE Enhanced
– **Muzzle Device:** DB Obsidian Muzzle Brake (5/8×24)
– **Magazine:** 26-Round Metal
– **Trigger:** Standard Mil-Spec
– **Weight:** 6.8 lbs
– **Length:** 35″ (collapsed) / 38.25″ (extended)
– **Finish:** Black Hardcoat Anodize

Order the Diamondback DB15 Obsidian Series 6mm ARC today at VanTon Arms and take advantage of our competitive pricing and fast nationwide shipping. Hard-to-find configurations like this don’t stay in stock long — order online now to secure yours.