Ever thought of an electric gun with improved accuracy like a SPR. Could add ammo capacity and allow the use of more standard webbing(-type) loadouts. You could switch from sniper to greenside SEAL literally in the flip of a switch. Look in the 'Themed Media' --> 'USA' --> 'US Navy SEALs', and do some digging the webbing rig could be barried (can't spell it right, right now) pretty deep in the thread.
SRC HK416(D10.5) gen.3 pro
KJW MEU(SOC) pistol (cansoft)