The Diamondback DBX pistol in 5.7x28mm with a 20+1 capacity and OD green Picatinny rail receiver (brand part no. DB165AL101) is an AR-pattern large-format pistol built around a dual gas piston system for reliable operation. Diamondback hard-coat anodizes the aluminum frame and M-LOK-compatible handguard, and the 8-inch black nitride threaded barrel uses a 1/2×28 right-hand thread pattern. A standard AR15 Mil-Spec trigger keeps parts compatibility simple, and the included 20-round magazine is FN Five-seveN compatible. Among AR-pattern semi-auto handguns, this DBX OD green configuration favors shooters who want a large-format 5.7x28mm platform with a distinct color.

Key Specifications

• The chambering is 5.7x28mm.
• The capacity is 20+1 rounds.
• The barrel measures 8 inches, finished in black nitride and threaded at 1/2×28.
• The receiver rail is OD green aluminum Picatinny.
• The handguard is M-LOK compatible, hard-coat anodized aluminum.
• The operating system uses a dual gas piston design.
• The included magazine is FN Five-seveN compatible.
• The action is semi-automatic, cycling a fresh round into the chamber with every trigger pull.
• The trigger is a standard AR-15 mil-spec trigger.
• The grip is a Magpul K-style grip.
• Overall length measures approximately 16 inches.

Frequently Asked Questions

Is the included magazine compatible with FN Five-seveN mags? Yes, the 20-round magazine is FN Five-seveN compatible.

What operating system does this pistol use? A dual gas piston system rather than direct impingement.

Buy the Diamondback DBX Pistol, OD Green

A dual gas piston system for reliable AR-pattern large-format pistol operation is exactly what this Diamondback DBX Pistol delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.