Glock 19 Gen 4 / Derya DY9 – Derya Island Complete Upper – 9mm Black
PLEASE DOUBLE CHECK DETAILS AND FITMENT BEFORE PURCHASE.
The Derya Island Complete Upper is a 9mm complete slide assembly with a 3.86-inch ported island barrel design for Derya DY9 frames and Glock 19 Gen 4-compatible frames.
This is not a generic Glock 19 upper. It is specifically listed for DY9 and Glock 19 Gen 4 frame compatibility. That makes fitment clear, but it also means Gen 3 and Gen 5 buyers need to stay in their lane.
Fitment
- Compatible with Derya DY9 frames.
- Compatible with Glock 19 Gen 4 frames per Derya listing.
- Complete upper with 3.86-inch ported island barrel.
- Optics-ready slide assembly per distributor and retailer listings.
Does NOT Fit
- Do not assume Glock 19 Gen 3 compatibility.
- Do not assume Glock 19 Gen 5 compatibility.
- Does not fit Glock 17, 26, 34, 43, 43X, or 48.
- Does not include frame, magazine, optic, or lower parts.
Specs
- Brand: Derya
- Model: DY9 Island Complete Upper
- Type: Complete upper / complete slide assembly
- Caliber: 9mm
- Barrel: 3.86-inch ported island barrel
- Fitment: Derya DY9 and Glock 19 Gen 4 frames
- Finish: Black Melonite
- Optics Ready: Yes
Verify Before You Buy
- Confirm your frame is Derya DY9 or Glock 19 Gen 4 compatible.
- Confirm optic footprint and mounting hardware before ordering.
- Ported barrels can affect ammo behavior, recoil impulse, and fouling. Test before trusting it.
- Function test before carry or serious use.
Disclaimers
⚠ Glock Disclaimer
IronKells Armory LLC is not affiliated with, endorsed by, or sponsored by Glock, Inc. or Glock Ges.m.b.H.
All references to GLOCK® are used solely to identify firearm models, parts compatibility, and fitment information for customers. Glock is a federally registered trademark of Glock, Inc. and Glock Ges.m.b.H.
Any product sold on this site referencing Glock is aftermarket, not OEM, and is not manufactured by Glock. Glock does not warranty, authorize, or guarantee the performance, safety, or reliability of any third-party components or modifications.
Firearm parts should be installed by a qualified armorer or gunsmith. Improper installation, modification, or use of aftermarket components may affect firearm safety, reliability, and void manufacturer warranties. By purchasing and installing third-party parts, the buyer assumes all responsibility for safe handling, installation, function testing, and use of their firearm and accessories.
⚠ Trademark & Compatibility Disclaimer
IronKells Armory LLC is not affiliated with, endorsed by, or sponsored by any manufacturer mentioned. All trademarks are the property of their respective owners and are used only to identify compatibility or fitment.
⚠ Install & Compatibility Disclaimer
Installation should be performed by a qualified armorer or gunsmith. Improper installation, modification, or use may affect firearm safety and reliability. Buyer is responsible for verifying compatibility, performing proper function testing, and ensuring safe operation.