Diamondback DB15 Obsidian 5.56 NATO 11.5" Pistol SBA5 Brace M-LOK

The Diamondback DB15 Obsidian delivers AR-15 platform reliability in a compact pistol configuration optimized for close-quarters applications. This 5.56 NATO chambered firearm combines an 11.5-inch black nitride barrel with premium components for consistent performance across diverse shooting scenarios.

What Makes This Different

Unlike standard carbine-length systems, the DB15 Obsidian's 11.5-inch barrel configuration provides enhanced maneuverability without sacrificing ballistic effectiveness at typical engagement distances. The black nitride finish offers superior corrosion resistance compared to standard phosphate coatings, extending barrel life under harsh conditions. Factory integration of the SBA5 stabilizing brace eliminates compatibility concerns while maintaining legal compliance.

Key Features

• 11.5-inch black nitride treated barrel for enhanced durability and accuracy
• 11-inch M-LOK compatible handguard with multiple attachment points
• SBA5 adjustable stabilizing brace with five position length adjustment
• Magpul MOE K2 pistol grip with enhanced texture and ergonomics
• Standard AR-15 magazine compatibility accepting STANAG pattern magazines
• Mil-spec trigger group and bolt carrier group components
• Picatinny rail system for optics and accessory mounting

Field testing demonstrates reliable cycling with both 55-grain and 62-grain ammunition across temperature ranges from -10°F to 120°F. The nitride barrel coating maintains accuracy standards beyond 3,000 rounds while resisting fouling buildup. Competition shooters report consistent sub-2 MOA groups at 100 yards with quality ammunition, while the compact profile excels in dynamic shooting disciplines requiring rapid target transitions.

Technical Specs

• Caliber: 5.56 NATO/.223 Remington
• Barrel Length: 11.5 inches
• Overall Length: 26.5-30 inches (brace collapsed/extended)
• Handguard: 11-inch M-LOK rail system
• Finish: Black nitride barrel, anodized receivers
• Magazine Capacity: 30+1 (with standard capacity magazine)
• Weight: Approximately 6.2 pounds
• Twist Rate: 1:7 inches
• Gas System: Carbine length
• Manufacturer: Diamondback Firearms

The DB15 Obsidian represents proven AR-15 engineering adapted for modern tactical applications. Current production models ship with all specified components ready for immediate deployment upon legal transfer completion.