The Diamondback DBX57 pistol in 5.7x28mm with a 20+1 capacity and dark grey aluminum frame (brand part no. DB1614L051) is an AR-pattern large-format pistol built around a dual gas piston system for reliable operation. Diamondback machines the M-LOK-compatible handguard and receiver in a distinct dark grey finish over stainless steel, and the 8-inch barrel uses a 1/2×28 right-hand thread pattern with a 1-in-9-inch twist matched to 5.7x28mm ballistics. 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 DBX57 dark grey 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, stainless steel with a 1-in-9-inch twist.
• The frame and handguard are finished in dark grey.
• The handguard is M-LOK compatible.
• The operating system uses a dual gas piston design.
• The included magazine is FN Five-seveN compatible.
• The pistol ships with 1 20rd. Magazine magazine(s).
• The barrel thread pattern is 1/2-inch-28 tpi.
• The sights are No Sights.

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 DBX57 Pistol, Dark Grey

A large-format 5.7x28mm platform with a distinct dark grey finish is exactly what this DBX57 delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.