The devil is in the details. A great slide is the foundation of your build, but it is important to finish that slide with high quality components designed to provide accuracy and consistency. Instead of sourcing every part individually, the slide completion kit includes every part needed to assemble the internal workings of your slide?all designed to work together. After completing the slide, just add a barrel, guide rod, and a completed lower, then pack your bag for the range. Tighter tolerances than factory Low-temperature vacuum PVD (Physical Vapor Deposition) coating, on select parts, creates a durable barrier against wear and tear Select parts CNC-machined from solid stainless steel billet Individually hand inspected for accuracy No gunsmith required Limited lifetime warranty Includes everything needed to finish out your slide: Striker (firing pin) Spring Extractor Striker (firing pin) Safety Spring Back Cover Plate Extractor Depressor Plunger RA Precision Striker (firing pin) Striker (firing pin) Spacer Sleeve Depressor Plunger Spring Striker (firing pin) Safety Spring Loaded Bearing Striker (firing pin) Spring Cups Slide Channel Liner