When purchasing Alpha Shooting Sports or any other brand from eGoods365.com store, you can be sure that (a) you are purchasing from US based company with the most responsive and friendly customer service; (b) an authentic, not a counterfeit and not a refurbished product.

In the world of Glock customization, the Glock G21 seems to get short-shrift, since everything's made for either the 9mm or .40 S&W variants of popular Glock handguns. Fans of the big-bore .45 ACP are left in the dust with their OEM models, but the Marksman V4  Slide designed for use in Gen 3 models of the G21 allows owners of these guns to step up with a clean, custom look.

Each Marksman V4 G21 Slide is machined from 416 stainless steel in order to ensure long-lasting performance, and the rear of the slide is milled to accept a Trijicon RMR or a Holosun 507 red-dot sight. The slide is finished with a DLC PVD treatment, and other highlights include enhanced serrations for more positive manipulation of the slide, as well as a clean, attractive finish.

The Marksman V4 G21 Slide is designed for use on Gen 3 Glock G21s or P80 PF45 handgun frames only.