Fits GEN 1-4 Glock Model(s): 17, 17L, 19, 20, 20SF, 21, 21SF, 22, 23, 24, 26, 27, 29, 29SF, 30, 30SF, 30S, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40 & 41. Caliber(s): 9/40, 10MM, .45 ACP, .357 Sig & .45 GAP. Does not fit: GEN 5 Glock Models. Our Rear Slide Cover Plates offer a durable, lightweight, high-quality billet aluminum alternative which replaces the factory plastic plate. Featuring our inside pocket profile CNC machined just like the factory profile for 100% direct fit & precise tolerances. Available in multiple finishes offered with & without laser engraved designs for that added personal touch. Manufactured to Exact Tolerances from 6061 T6 Aircraft Billet Aluminum & Anodized for Extreme Durability; will not chip or break. NDZ Performance is a USA Manufacturer of High Quality Aftermarket Firearm Accessories. Proudly made right here, in our facility, to the Highest Quality Standards from materials such as Aluminum, Brass, Steel & Delrin. All NDZ manufactured goods carry a Lifetime Warranty against Manufactured Defects.NDZ Performance is a trusted brand, proudly Made in The USA, in our facility. High quality permanent laser engraved images provided by NDZ Performance. Manufactured to Exact Tolerances from 6061 T6 Aircraft Billet Aluminum & Anodized for Extreme Durability; will not chip or break. Our Rear Slide Cover Plates offer a durable, lightweight, high-quality billet aluminum alternative which replaces the factory plastic plate. Featuring our inside pocket profile CNC machined just like the factory profile for 100% direct fit & precise tolerances. Available in multiple finishes offered with & without laser engraved designs for that added personal touch. Fits GEN 1-4 Glock Model(s): 17, 17L, 19, 20, 20SF, 21, 21SF, 22, 23, 24, 26, 27, 29, 29SF, 30, 30SF, 30S, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40 & 41. Caliber(s): 9/40, 10MM, .45 ACP, .357 Sig & .45 GAP. Does not fit: GEN 5 Glock Models.Date First Available: February 22, 2019. Best Sellers Rank: #140,911 in Sports & Outdoors. Customer Reviews: 4.6 out of 5 stars 116 ratings 4.6 out of 5 stars. : B09K4HB1R3. Style: ?Plain. Manufacturer: ?NDZ Performance. Number of Items: ?1. Material: ?Aluminum. Color: ?Red. Country of Origin: ?United States. Brand Name: ?NDZ Performance. Package Weight: ?0.02 Kilograms. Item Package Dimensions L x W x H: ?5.47 x 3.31 x 0.35 inches.