Originally Posted by dodgetheram
I know the local shop has a rail base rifle. Let me elaborate. Its a stock and body resemble an m4 with railed front end, without a barrel. I was told you could mount and m203 on it and have a stand alone grenade launcher. It has no trigger or firing mech in it. I will msg the store guy and get more details.
If Matt is the proprietor of the store - then i know precisely what you are talking about - I bought it late last week. That was what it was - a standalone grenade launcher frame specifically meant for the madbull xm203 series, with a collapsible butt-stock, M4ish pistol grip assembly, and a full length RIS. I modded it to fit a KA M203 with conventional trigger assembly.