I have a selector switch that is a semi version USGI spec in a DPMS lower parts kit. My question is: Can i just install the selector switch on the opposite side of the receiver since i am a lefty?
get an ambidextrous one. Then you'll have your left hand selector. The cheapest I've seen are the ones from Rock River. The best ones I've seen are the BAD ASS The Battle Arms Development Ambi Safety Selector.