I have this same Walther red dot on my Colt M4 OPS .22lr rifle and it has held up well to the knocks and bumps, but of course, I don't know how it will handle the 308s recoil. It is a sturdy little sight though.
but not new to firearms. Live in central Florida, been in the firearms business for 23 years. Have fired 308ARs but never owned one. I've owned several 308s in my lifetime though, both bolts and semis. I've also owned several ARs, all in 5.56/.223 and am wanting to learn more about the 308s. Drew invited me over from Tactical22.net where I am a contributor and I'm looking forward to new experiences here. Thanks, MG