Derya Arms DY9 Island Complete Upper Slide Assembly 9mm

The Derya Arms DY9 Island is a complete upper/slide assembly chambered in 9mm, designed for the DY9 pistol platform and compatible with Glock 19 Gen 4 frames. This complete upper integrates the slide, barrel, and associated components into a ready-to-install assembly. The unit ships with fixed fiber optic sights installed and features an optics-ready configuration for aftermarket red dot mounting. Finished in black, the Island upper is engineered for drop-in compatibility with DY9-pattern and Glock 19 Gen 4 frames, offering a precision-focused upper solution for PCC-style pistol builds.