Product DescriptionThe Shield Arms Glock 43X/48 OEM 15-Round Magazine +5 Extension is a precision-machined upgrade designed to increase the capacity of compatible Glock OEM magazines while maintaining a durable, streamlined fit. Built from 6061 aircraft-grade aluminum and finished with a Type II anodized coating, this magazine extension adds 5 rounds to Glock 43X and Glock 48 OEM 15-round magazines, bringing total magazine capacity to 20 rounds. This drop-in extension includes a plus-power replacement spring and mounting hardware for installation, with no permanent modifications required. It is intended for OEM 15-round magazines only and is not compatible with OEM 10-round magazines or Shield Arms S-Series magazines. Magazine not included.Product Highlights Adds +5 rounds to Glock 43X and Glock 48 OEM 15-round magazines for increased capacity Machined from durable 6061 aircraft-grade aluminum for strength and long-term performance Type II anodized finish helps resist wear and provides a clean black appearance Includes a plus-power replacement spring and installation hardware for a complete upgrade package Backed by Shield Arms lifetime warranty and Spring for Life guarantee Specs Brand: Shield Arms Manufacturer Part Number: G43X48-OEM15-ME-5-BLK UPC: 810159262385 Product Type: Magazine Extension Compatible Pistols: Glock 43X, Glock 48 Compatible Magazines: Glock OEM 15-round magazines only Capacity Increase: +5 rounds Total Capacity with Compatible Magazine: 20 rounds Material: 6061 aircraft-grade aluminum Finish: Type II anodized, black Installation: Drop-in, no permanent modifications Included Hardware: Plus-power replacement spring and mounting hardware Compatibility Notes: Not compatible with OEM 10-round magazines or Shield Arms S-Series magazines Country of Manufacture: USA Manufacturing Location: Bigfork, Montana Warranty: Lifetime warranty with Spring for Life guarantee 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.