Modlite ModButton Lite 4.5 inch (Surefire®/Modlite Plug) color-ls321g-green One piece upper receiver with

One piece upper receiver with keymod rail

The most you will have to do is cut off the circle loop at the top of your spring if your mag is of that design such as KA

Construction: Full Metal

they believe in maintaining an evolutionary product design mind-

Modlite ModButton Lite 4.5 inch (Surefire®/Modlite Plug) color-ls321g-green One piece upper receiver withModButton Lite is a smaller lighter weight cousin to the original ModButton. The switch features the same momentary only activation as the original ModButton. It also features the same high power cable and switch from ModButton but in a slightly smaller package without the integrated mount. The switch is made from injection molded plastic and fully potted to provide extra degree of protection in harsh environments and ensures a durable long lasting