This is a complete Zev Duty Slide (G17 size) cut for RMR/Holosun with factory internals, barrel, Zev sights, etc. Barely any rounds on this, just tested it to verify that it works. Will fit any Gen 3 Glock 17/22/34/35 frame or full size Zev frame. The bare slides with no barrel or internals sell for +$280 so I'd say this is a solid deal. Thanks!