The DB15 series is designed to cater to a wide range of shooters with its comprehensive caliber selection. Spanning from 5.56 to 6.5 Grendel, you'll find a model perfectly suited to your shooting preferences. All DB15 series variants operate on the reliable U.S. Military-proven gas-impingement system and crucial components like the barrel, upper receiver, lower receiver and handguard are meticulously machined in-house using our advanced Diamondback CNC machines. The DB15 series offers various finishes and lengths, often equipped with Magpul furniture as standard. With a three-tiered approach (carbon series, black gold series, Diamond series), we ensure that there's a fitting choice for every firearm enthusiast, whether you're a first-time buyer or a competition shooter seeking precision options.