Derya Arms MK9 9mm Semi-Auto Pistol | DA/SA | 10+1 Capacity | 4.9″ Barrel

The Derya Arms MK9 is a double/single-action 9mm semi-automatic pistol built for shooters who want a capable, full-featured handgun with a proven DA/SA trigger system. Chambered in 9mm and equipped with a 4.9-inch barrel, it delivers a solid balance of accuracy and control for range use, home defense, or duty carry where permitted. The decocker safety system allows the hammer to be safely lowered without a manual thumb safety, a hallmark of traditional DA/SA design favored by experienced shooters.

Key Specifications

• The pistol is chambered in 9mm for broad ammunition availability and manageable recoil.
• The barrel measures 4.9 inches, contributing to a longer sight radius and consistent accuracy.
• Capacity is 10+1 rounds, with one 10-round magazine included.
• The action is Double/Single Action (DA/SA), offering a longer first pull with a lighter, shorter trigger reset for follow-up shots.
• A decocker safety allows the hammer to be safely lowered on a chambered round without engaging a manual safety.
• The barrel features a 1-in-16-inch rate of twist for stable bullet flight.
• The slide features front and rear serrations for a positive grip during manipulation.
• Fixed sights provide a consistent, no-snag sight picture right out of the box.

The MK9 represents Derya Arms’ commitment to bringing reliable, classically-configured handguns to the market at an accessible level. With its DA/SA trigger, decocker operation, and full-size 4.9-inch barrel, this pistol will appeal to those who appreciate traditional action design and want a dependable 9mm without compromise. Whether you’re adding to your collection or putting rounds downrange at the range, the MK9 is a serious option worth a close look.