Shadow systems glock gen 3/4 slide completion kit w/standard 9mm extractor - Shadow Systems Slide Completion Kit for Glock Pistols

Excellent product. I was surprised since it arrived with most of the small parts pre-assembled. My first attempt at gunsmithing was a breeze with no glitches along the way. Installed on a new Rival Arms slide to accommodate a red dot system. I did also purchase a Glock Channel Liner tool from Squirrel Daddy since most instructional videos recommended using one. Not sure I needed it as the liner slid smoothly into place on the new slide. I highly recommend.