The Diamondback DB10 Black Gold Series .308 Win SBR pairs a 13.5-inch barrel with a Magpul CTR stock, putting full-power .308 Winchester into an AR-10 that handles like a carbine (Diamondback part no. DB2430C001). Black Gold is the middle tier of the DB10 range, and it brings the DB Black Gold lower with an enhanced trigger guard, a 13-inch M-LOK V-Rail with anti-slip texture pads and upgraded Magpul furniture. The 4150 CrMoV barrel is black nitrided with a 1:10 right-hand twist and runs a mid-length direct impingement gas system. Diamondback builds every DB10 at its facility in Cocoa, Florida. For a vehicle rifle, a suppressor host or a compact hunting gun in a heavy caliber, this is a short .308 that keeps its punch.

Key Specifications

• The chambering is .308 Winchester, a full-power cartridge for hunting and longer-range shooting.
• Barrel length is 13.5 inches, short enough to keep the rifle handy while holding useful .308 velocity.
• The barrel is 4150 CrMoV with a black nitride finish, a medium profile built to resist heat and wear.
• The rifling twist is 1:10 right-hand, the common rate for stabilizing standard .308 bullet weights.
• The gas system is mid-length direct impingement, which softens the cycling impulse compared with a shorter system.
• The handguard is a 13-inch M-LOK V-Rail with anti-slip texture pads for a sure grip and accessory space.
• The upper is an A3 flattop forged from 7075-T6 aluminum, ready for the optic of your choice since no sights are included.
• Furniture is a Magpul CTR stock and MOE K2 grip, a collapsing stock that sets length of pull for armor or a bare shoulder.
• Capacity is 20+1 from the included Magpul Gen M3 PMAG.
• Overall length runs 31.125 inches collapsed to 33.75 inches extended, with a listed weight of 8.2 pounds.

Frequently Asked Questions

Does it come with sights? No. Diamondback ships it with no sights on an A3 flattop upper, so you can mount the optic or backup sights you prefer.

What trigger and muzzle threads does it have? Diamondback lists a standard mil-spec trigger, and the barrel is threaded 5/8×24, the common .308 pattern for muzzle devices and suppressor mounts.

Do I need ATF approval to buy this? No. As of October 9, 2026, ATF no longer requires Form 4 approval, registration or a tax stamp for short-barreled rifles. It transfers on a Form 4473 with a background check through a Class 3 (SOT) dealer. State and local laws still apply. Taking an SBR across state lines still requires an approved ATF Form 5320.20.

Buy the Diamondback DB10 Black Gold Series .308 Win SBR, 13.5-Inch, 20-Round

As of October 9, 2026, this short-barreled rifle transfers on a Form 4473 with a background check at your Class 3 (SOT) dealer, with no Form 4 or tax stamp; state and local laws still apply. Order through Diamondback Firearms’s short-barreled rifle lineup and our Lubbock, Texas team will handle the transfer, and it ships fast to your Class 3 dealer.