Diamondback DB15 .338 ARC 10.5in Pistol — 26rd, SBA5 Brace

About this product

The Diamondback DB15 is an AR-style pistol chambered in .338 ARC with a compact 10.5-inch threaded barrel and a 9-inch V3 M-LOK anti-rotation rail. The build uses a forged 7075 T-6 aluminum receiver and is fitted with upgraded Radian ambidextrous controls. This configuration ships with an SB Tactical SBA5 pistol brace and a single 26-round metal magazine for extended use in a compact platform.

Key Specifications

• Chambered in .338 ARC for increased ballistic performance relative to common intermediate calibers.
• The barrel measures 10.50 inches and is threaded with a 5/8×24 pattern for muzzle device compatibility.
• Magazine capacity is 26 + 1 with the included magazine.
• Includes one 26-round metal magazine as standard equipment.
• Handguard is a 9-inch V3 M-LOK anti-rotation rail for modular accessory mounting.
• Receiver is constructed from forged 7075 T-6 aluminum for strength and durability.
• Controls include an ambidextrous Radian Raptor-LT charging handle and Radian Talon ambi safety.
• Features a pistol-length adjustable gas system with a Superlative Arms adjustable gas block for tuning with suppressors or varied loads.
• Equipped with an SB Tactical SBA5 pistol brace for ergonomic handling.
• Rate of twist is 1-in-5 and the unloaded weight is approximately 5.46 lbs.

Purpose-built for shooters who need compact .338 ARC performance, the DB15 combines robust materials and upgraded controls in a short-barrel platform. Its combination of a threaded 10.5-inch barrel, extended-capacity magazine, adjustable gas system, and ambidextrous ergonomics makes it a capable option for precision-oriented use where a compact package is preferred. The DB15’s component set delivers a practical balance of control, durability, and modularity for owners who value dependable, well-equipped equipment.