Product Description The ZEV Technologies stainless steel recoil spring guide rod is designed for compact frame size GlockA(R) pistols, providing a durable, precision replacement for your recoil system. It is intended to be used with an ISMI recoil spring (sold separately) in the correct weight for your pistol-in most cases, a 13 lb spring fits best. This guide rod is not compatible with Glock factory guide rod springs. If you plan to use this guide rod with a Generation 4 GlockA(R), a Generation 4 reducer is also required (RDC-4G-SS or RDC-4G-SS-DLC, sold separately). Product Highlights Stainless steel recoil spring guide rod built for compact frame GlockA(R) pistols Designed to pair with ISMI recoil springs (spring not included) Not compatible with GlockA(R) factory guide rod springs Generation 4 compatibility requires a reducer ring (RDC-4G-SS or RDC-4G-SS-DLC) Includes guide rod body and spring retaining screw Specs Brand: ZEV Technologies Product Type: Recoil spring guide rod Material: Stainless steel MPN: ZEVGRODCPTSS UPC: 811745021959 Compatibility: Glock 19 (Gen 1-3), Glock 19 (Gen 4 w/ reducer), Glock 19C (Gen 1-3), Glock 23 (Gen 1-3), Glock 23 (Gen 4 w/ reducer), Glock 23C (Gen 1-3), Glock 32 (Gen 1-3), Glock 32 (Gen 4 w/ reducer), Glock 32C (Gen 1-3), Glock 38 (Gen 1-3) In the Box: ZEV guide rod body; ZEV guide rod spring retaining screw Notes: Recommended use with an ISMI recoil spring in the correct weight (often 13 lb); reducer ring required for Gen 4 use 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 products manufacturer.