r/Ask_Airsoft

Pretty straightforward question: i know some M60's have a mosfet with ajustable rate of fire, and since m60's (to my (very limited) knowlege use 249 type gearbox's, is there a mosfet that can go on a 249, specifically a full métal A&K?

(Excluding the cheap "plug-in mosfets", you know, the ones that just plugs onto the back of the switch)