If you could take an existing 308 and do whatever you wanted to make it the perfect battle rifle what would you do?

For example I would take the Colt MARC 901 and keep the monolithic rail but make it MLOK, I would keep the front sight post gas block but make it adjustable with a click setting, flute the barrel under the hand guard and give it a taper from the gas block forward. I would also make an ambi charging handle like the CM762/CM65 have. NP3 coat the chamber and BCG. Maybe keep it 16 or chop it to 14.5, Nitride the barrel and either run a Surefire socom brake or a warcomp and throw a 1-8 on top.

I really like my 901 in heavy division for 3gun but it’s heavy but it’s very accurate and with a surefire brake it’s very soft shooting.