DESCRIPTION
The Diamondback DB15 16" 5.56 NATO (DB171AK211) is an optics-ready AR-15 with a nitride 4150 CMV barrel, carbine-length gas, and a 15" M-LOK rail in Smoked Bronze Cerakote.
Key Features
Smoked Bronze Cerakote: Durable, weather-resistant finish on receiver and barrel.
16" 4150 CMV Nitride Barrel: Medium profile with long service life and easy maintenance.
Carbine-Length Gas System: Proven reliability and smooth cycling.
15" M-LOK Free-Float Rail: Plenty of attachment space while improving accuracy.
Forged 7075-T6 Receivers: A3 flat-top, T-marked upper and DB-15 carbon lower.
MPI, Shot-Peened BCG: Mil-spec 8620 carrier for dependable performance.
Magpul Furniture: MOE grip and MOE 6-position carbine stock.
30-Round PMAG Included: Ready for the range out of the box.
Optics-Ready: No sights installed—add your preferred optic or irons.
Specifications
Model: DB171AK211
Caliber: 5.56 NATO
Barrel Length: 16"
Barrel Material/Finish: 4150 CrMoV, black nitride
Twist Rate: 1:8" RH
Gas System: Carbine-length
Muzzle Threads: 1/2x28
Handguard: 15" M-LOK free-float
Upper Receiver: A3 flattop, forged 7075-T6, T-marked
Lower Receiver: 7075-T6 (DB-15 carbon lower)
Bolt Carrier Group: Shot-peened, MPI, mil-spec 8620 carrier
Grip/Stock: Magpul MOE grip; MOE 6-position carbine stock
Magazine Included: (1) Magpul PMAG, 30-round
Sights: None (optic-ready)
Finish: Smoked Bronze Cerakote
Why Buy from Fort Thompson Sporting Goods
Expert-verified builds, smart accessory recommendations, and friendly service to get your AR dialed in fast.
Available now at Fort Thompson Sporting Goods!
