A customized Glock 17 variant features a modified slide, precisely machined to accommodate a miniature red dot sight. This alteration allows for direct mounting of the optic, enhancing target acquisition speed and accuracy. An example includes a standard Glock 17 Gen 3 slide modified with a cut for a Trijicon RMR sight and suppressor-height sights.
The precision machining involved offers several advantages. It provides a lower profile than using adapter plates, ensuring a more natural point of aim. This process also allows for co-witnessing, meaning the iron sights remain usable even with the optic mounted. Historically, this type of modification gained popularity as red dot sights became smaller, more durable, and affordable, transforming how handguns are used in competitive shooting and defensive applications.