IMO too heavy of a gun and too heavy of a round to carry. It really comes down to the same argument for/ against 556. 556 is roughly 1/3 the weight of those heavier rounds and when you have to hump that along with everything else that matters. Personally I think 556 has plenty of killing power for combat distances in the real world. The 6.8x51 and 7.62x51 is better only at ranges that are often not encountered or if they are its more nitch.Discussion topic. Pro's/Cons and thoughts?
Para style folding stock FAL, 18.5" barrel capable of mounting a supressor and chambered in 6.8X51 SIG. Composite stock with M-Lock or equivalent capability. Fluted 1:7" twist barrel to decrease weight.