Product Description The Rival Arms Slide Completion Kit for the Glock 21 in 45 ACP takes the guesswork out of slide assembly by supplying every internal component you need in one precision-engineered package. Instead of sourcing every part individually, this complete kit includes all parts designed to work together seamlessly. Select components are CNC-machined from solid stainless steel billet and finished with a low-temperature vacuum PVD (Physical Vapor Deposition) coating that creates a durable barrier against wear and tear. Every piece is individually hand-inspected for accuracy and manufactured to tighter tolerances than factory specifications, ensuring a reliable, drop-in upgrade that requires no gunsmith. Product Highlights Complete slide kit includes Striker Spring, Extractor, Striker Safety Spring, Back Cover Plate, Extractor Depressor Plunger, RA Precision Striker, Striker Spacer Sleeve, Depressor Plunger Spring, Striker Safety, Spring Loaded Bearing, Striker Spring Cups, and Slide Channel Liner Tighter tolerances than factory for improved accuracy and reliability in your Glock 21 Low-temperature vacuum PVD coating on select parts creates a hard, durable barrier against wear and corrosion Select parts CNC-machined from solid stainless steel billet for consistent, high-quality construction Individually hand-inspected for accuracy; no gunsmith required for installation, backed by a limited lifetime warranty Specs Brand: Rival Arms MPN: RARA42G006A UPC: 788130031971 Model: Slide Completion Kit Caliber: 45 ACP Firearm Fit: Glock 21 Color: Black Finish: PVD (Physical Vapor Deposition) Material: Stainless Steel Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer. ]]>