This here is an a&k m60e4, with an inokatsu mk43 rail fit to it and a rail drilled and bolted onto the feed tray. Internally the gearbox is stock, but it has a custom Cnc hop unit and an r-hopped tight bore barrel (I forget the brand). The icing on the cake (besides the sweet paintjob by yours truly) is an almost-new well maintained 5000 mah 25c 7.4 lipo— unlike other batteries saws run off of, this one will have you cooking all day! 350 OBO, feel free to offer up, worst I can do is say no.