The DB15 series is designed to cater to a diverse array of shooters with its extensive caliber selection. Ranging from 5.56 to 6.5 Grendel, you'll find a model tailored to your specific shooting needs. Each DB15 series variant operates on the reliable U.S. Military-proven gas-impingement system and critical components like the barrel, upper receiver, lower receiver and handguard are carefully machined in-house using our advanced Diamondback CNC machines. The DB15 series offers diverse finishes and lengths, often featuring Magpul furniture as standard. With a three-tiered approach (carbon series, black gold series, Diamond series), we ensure there's an appropriate choice for every firearm enthusiast, whether you're a first-time buyer or a competition shooter seeking precision options.