Zaffiri Precision Complete Upper Parts Kit Features The Zaffiri Precision Complete Upper Parts Kit covers every internal part a custom slide build needs pulling together the firing pin and spring spring cups safety plunger and spring and a complete extractor with loaded chamber indicator into one kit. Because every part is sourced from a US manufacturer and machined to original specification the components drop into a Glock 43 43X or 48 slide without the fitting work that aftermarket parts sometimes demand. The slide recoil cover plate and polymer recoil spring assembly guide rod round out the kit giving a builder the last pieces needed to close up a completed slide. This kit is built specifically for the 43 43X and 48 platform and is not interchangeable with other Glock generations or models so builders get a precise fit rather than a generic universal part. Assembling a custom slide from a bare housing often means sourcing a dozen small parts individually and this kit consolidates that search into a single purchase. For shooters upgrading an existing slide or finishing a milled or optic-cut project having a complete correctly specified parts set removes the guesswork from the build. The Zaffiri Precision Complete Upper Parts Kit is a practical foundation for any Glock 43 family custom build. Zaffiri Precision Complete Upper Parts Kit Specifications Manufacturer: Zaffiri Precision Model: Complete Upper Parts Kit Compatible Hosts: Glock 43 43X 48 Includes: Firing Pin/Spring Spring Cups Safety Plunger/Spring Extractor w/ LCI Extractor Depressor Plunger Assembly Slide Recoil Cover Plate Recoil Spring Assembly Available At: GrabAGun