Video Review: Diamondback DBX57 With Hi-Lux TD-3C Red Dot

Diamondback BDX57 pistol on a target with 3 boxes of ammunition by Brian Schraeder

Small, sleek, lightweight, and packing a powerful punch, the Diamondback DBX57 is the ideal choice for a truck gun, backpacking, or home defense. The DBX57 uses the same 20-round magazine as the FN Five-seveN pistol, which makes for a powerful combination utilizing the same magazines.


  • Operating System: Locked-breech, dual gas piston
  • Caliber: 5.7x28mm
  • Frame: 7075 Aluminum, hard-coat anodized
  • Handguard: 6061 aluminum, hard-coat anodized, M-Lok compatible
  • Barrel Length: 8 inches
  • Twist Rate: 1:9 RH
  • Barrel Muzzle Threads: 1/2×28 RH
  • Muzzle Device: DBX muzzle device
  • Trigger: Standard AR-15 Mil-Spec
  • Grip: MagPul MOE K
  • Action-Type: Semi-auto
  • Sights Included: None
  • Magazine: 20-round (FN Five-seveN compatible)
  • Overall Length: 15.25 inches
  • Overall Height: 7.3 inches
  • Overall Width: 1.75 inches
  • Weight (With Empty Magazine): 3.0 pounds

After watching the review, what is your opinion of the Diamondback DBX57? How does the 5.7mm round compare to your favorite self-defense ammo? Share your answers in the comment section.

The Mission of Cheaper Than Dirt!'s blog, The Shooter's Log, is to provide information—not opinions—to our customers and the shooting community. We want you, our readers, to be able to make informed decisions. The information provided here does not represent the views of Cheaper Than Dirt!

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