READ WHOLE POST So I tried to do this but it's too picky to work in a 240. So I'm selling my Reaper, its maybe had 100 rounds through it before I gave up trouble shooting it. It works great in my M4 but not in my 240(I blame poor QC on the 240). Includes: -Reaper with M4 nozzl -Premium FCU Also Available: -20" Amped Custom IGL -M249 wire harness(free if you want it) Price includes shipping and PayPal fees(if you send G&S) NO TRADES UNLESS ITS A POLARSTAR M240 FE