Shield Arms S15 +10 Magazine Extension 9mm 10rd - Black Anodized Aluminum

The Shield Arms S15 +10 Magazine Extension is a precision-machined aluminum floor-plate sleeve that adds 10 rounds of capacity to your existing Shield Arms S15 magazine. Designed for shooters running S15 steel mags in a Glock 43X or Glock 48 chambered in 9mm Luger, this extension lets you push real capacity out of an otherwise flush-fit carry platform without sacrificing the reliability of the patented S15 magazine system.

Each extension is machined from 6061 aluminum and finished in a hard Type II anodized black coating for excellent corrosion resistance and long-term durability under everyday carry and range use. The signature easy-access floor plate geometry speeds reloads, while index cuts machined into the body deliver a positive gripping surface for seating and stripping. Installation is simple: drop the factory S15 base plate, slide the +10 extension on, and reinstall - no fitting or gunsmithing required.

Shield Arms backs every S15 magazine component with a lifetime warranty, and the S15 +10 extension is made in the USA to the same standard as the company's patented steel S15 magazines. If you already run S15 mags in your Glock 43X/48 for duty, competition, or everyday carry, the +10 extension is the cleanest way to add real capacity while keeping the proven S15 platform intact.