I don’t even think you need zero recoil. A modern battlefield rifle needs that punch you like, be light enough to hump around, have a collapsing or folding stock for getting in and out of vehicles, some inherent accuracy and be able to withstand abuse. I have recently gotten to shoot an FN SCAR in 7.62 and like it a lot. I don’t know how it would do for a whole deployment to Afghanistan, but it is really pretty sweet. There is a lot of recoil compared to an M-4, but it is a real tack driver with a low power optic and ball ammo. Really nice with a suppressor.
I have a 308 SCAR, here in Alaska we hunt with ARs. Killed a bunch of caribou and blk bear with the Scar. I watched my nephew kill a grizzly at 300 yards with my Scar with TTSX’s & A-Frames mixed in the mag Now I’ve killed bou at 300 yards and bear outta the stand with the 6.8. I usually stick to my 30-378 Weatherby or 338 Fed with moose, but last year had the Scar with me road hunting. I have 3.5 X 35 Acog red dot on Scar. Missed a moose running through the trees at 350 yards, 7-8 times. First moose I haven’t knocked down in over 20 years; but can’t believe I didn’t hit him; and he kept going. So anyway, no more semi autos for mew with the moose; I’m sticking with Mark V. Say what you will about 308s & 800 yard shots; I don’t trust 308 in semi autos nowadays.
I so want an SCAR-17H. Ultimate .308 semiauto..