In a purely combat scenario, would you want to be running the Remington ACR or the LWRC M6A2? I'm assuming 6.8 SPC would be the preferred cartridge for stopping bad guys. Price/availability are irrelevant. Here's the pros of both: ACR Melonite coating on the barrels Self-regulating short-stroke gas piston system Folding stock, adjustable cheek piece Interchangeable barrels/calibers in a matter of minutes website: Remington Defense M6A2 NiCor coating on the barrels Self-regulating short-stroke gas piston system Nickel coating on the internals Cerakote finish website: LWRC International LLC - M6A2 P.S. Anyone know the difference between NiCor and Melonite?