I came by this in a trade.. It appears to be an A2 upper..that someone has modified to attach a Picatinny rail.. All the work looks very professionally done..and there are holes tapped for screws to attach the rail.. As shown..the forward assist and dustcover are already installed.. I have absolutely no idea what it's worth..but..as always..am open to trades.. I am looking for several specific things..as follow..but not limited to them.. A good flash supressor for AR.. Decent sights/optic for an AR Pistol.. Lo-pro gas block.. You get the idea... Other Misc. Items available..here: Goodies pictures by crossfire1911 - Photobucket PLEASE..use Doubletap.firstname.lastname@example.org for offers..