Best combat rifle layout

>>34733296
Just stick to the AR unless you just want an ACR because you think they're cool

>SCAR 16 looks like it's one failed diet away from turning back into the ARX

>>34733296
ACR is chambered in 5.56 nato. Your m855 round will go subsonic around 800 yds. If you know your hold overs, you can make consistent hits on a man sized target out to 600+ with. The round will destabilise drastically once it goes sub sonic. Also, the light weight of the bullet will be affected greatly by crosswinds.

Ar10 chambered in 7.62x51 will give you better but not great ballistic coefficient. It will stay supersonic past 1000 yds and is almost 3x the grain weight.

300blk was designed to be shot suppressed with subsonic ammo and it is generally considered to be a 0-200yd round.

There are other caliber options that would work better for your needs like 6.5cm. Do some research.

Remington doesn't even sell their version of the ACR to civilians