The 6940 has different features it isn't a replacement. The problem with the 6920 of late were colt qc problems. They cut a ton of their manufacturing and used assemblers vs armorers. There was a really fun thread on another site where guys were posting their colt bcgs that the gas key staking completely missed the bolts. Hopeful that cz can fix the issues.I thought colt brought out the 6940 line to fix the 6920 mess.
You can build a Frankin15 with quality parts from several different manufacturers and combine them for a better rifle than what the military is issued. Except maybe the new FN made M4's. FN makes high quality firearms for military service.
The M240 is a renamed FN MAG.
The M241 is the FN minimi
Both are excellent.
Every online review I've ever read in one post, magnificent lol.I have a couple ARs that I have never shot but I have had no trouble with them at all and they seem to do just as well as the others. So I think we can all agree they are just as good.