First Look: Derya DY9 Island 9mm Pistol and Complete Slide

A 9mm pistol based on Glock G19 internals with a unique slide assembly.

by
posted on July 16, 2025
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Derya DY9 Island 9mm Pistol

Derya Arms has just launched the new Derya DY9 Island pistol, a Turkish-manufactured polymer-frame pistol patterned after the 9mm Glock G19 Gen3 pistol. The pistol as a unique compensated “island barrel” into its slide and barrel assembly. In addition to offering Derya DY9 Island pistols, Derya Arms also sells complete top-end DY9 Island kits separately.

The most significant part of Derya Arms DY9 Island is its slide. In addition to having a factory optics-ready slide that comes cut for the popular Trijicon RMR optics-footprint, it includes an island barrel assembly. Island barrels are typically associated with expensive, high-performance pistols like double-stack 1911s. The idea behind this setup is to change the recoil and slide-tracking characteristics of the handgun. This performance modification involves milling the upper portion of the pistol slide so that there’s an “island” of barrel that the slide contacts. Oftentimes, this portion of the barrel is also ported, like in the case of the Derya DY9.

Derya Arms DY9 Island Specifications And Features

  • Model Name: Derya Arms DY9
  • Country Of Origin: Turkey
  • Front Sight: Island-barrel front
  • Caliber: 9 mm
  • Action: Striker-fired, semi-automatic
  • Rear Sight: Truglo green, optic-plate-direct RMR footprint
  • Capacity: 10 or 15 rounds
  • Grip Type: Polymer with changeable back plates
  • Weight: 1.81 pounds
  • Barrel Length: 3.86 inches
  • Finish: Black Melonite
  • Overall Length: 6.9 inches
  • Overall Width: 1.16 inches
  • Overall Height: 4.56 inches

“Derya Arms is committed to making competition-grade performance accessible,” says Abdullah Celer, President of Derya Arms. “The DY9 Island takes a classic Island Barrel Design and makes it available to every shooter, with a pistol and interchangeable upper that deliver sharpshooter accuracy.”

“The Island Barrel was a challenge we embraced with passion,” adds Harry Burleigh, VP of Manufacturing. “By streamlining production, we’ve integrated a feature once exclusive to high-end firearms, achieving an estimated 25 percent muzzle rise reduction and 12 perent recoil reduction, ensuring every shooter can experience the difference.”

The Derya Arms DY9 Island pistol has an MSRP of $599. To learn more about this new pistol and slide assembly or other products from Derya Arms, visit deryaarms.com.

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