[rahbert]

FN also make the M4s. Anyway I soldiered with a Colt model
and found it perfectly adequate. plastic is fine as long as you aren’t planning on using the vertical buttstroke feature.

[Nat Turner]

I was a tanker and got familiar with the FN from the M240 MG. It was rugged, disassembled quick and cleaned quickly. I never had an M4, the 240 was far better than the M60 and a lot lighter than Ma Deuce or the M85.

[AvOrdVet]

Anyway I soldiered with a Colt model and found it perfectly adequate. plastic is fine as long as you aren’t planning on using the vertical buttstroke feature.

Same way here, put quite a few rounds through the XM16, utilized most versions through the M-4 with few problems... although out of all the weapons I've operated with, the M-14 would be the "One", and with all that wood (or heavy high impact plastics), the "buttstroke" is highly effective... ;-)