i currently have 2 m4's
1, my baby is a custom build. magpul body 12" ras, sopmod stock, magpul miad grip
it has a 6.04 tight bore barrel and stock internals. shooting roughly 330fps but she's sweet
2. is the nail driver, custom build. tm body madbull jp 7"front kit, hk 417 stock, hk416 grip
it has a madbull python 6.04 tighbore, g&p reinforced mechbox, 300%torque up gears, high tourque motor, m130 spring. shooting in the 450fps range( will be chrono'd sat)
and a up and comming special guest soon! gotta be on the field to see this one