I thought this article was nearly a year old?
What I was thinking except stick an (s) after year. Best I can recall the rig was the M4's used in the test were previously issued carbines against new competition and anytime the M4 did not fire 3 shots when placed on burst it would count as 2 malfunctions.
Seems that it was also mentioned any lack of reliabilty on the part of the M4 stemmed from the lack of open space in the lower which is an issue not corrected by an HK416 or any other piston upper, but the operator would no doubt feel better about it.
Guess any carbon fouling in the chamber/receiver of an SKS, AK, FAL, G3, or even a bolt action somehow comes from the gas pipe of a Stoner rifle as well. In a bygone era the design would have been blamed for milk cows drying up and fields withering.
