Ics m4a1 barrel nut and rails

[Dan]

Hi does anyone know of a keymod handguard or possibly a wire cutter handguard that will fit on an Ics m4a1 preferably not overly expensive?   fire support sell the Ics Keymod system but it's £111 I'm not overly fond of spending over a ton on a rail for my m4 as I didn't pay much more for the gun itself.  I know Ics and g&p use a barrel nut no one elsr does and I'm not keen on re-threading the receiver either. 

any suggestions would be good or some sort of minor modifications are possible as I'm quite handy in that department. I'm looking to spend no more than £50 pound for the rail kit if that helps