The fact that Henderson Defense out of Nevada was burning up "civilian grade" MR556 barrels in under 10K rounds is shameful.
Hopefully HK corrects the issue with the A3 and issues mil spec barrels.
I trust completely what they stated. Henderson Defense is a machinegun rental range that caters to the out of town guests visiting for various conventions in Las Vegas, Nevada. They discussed various platforms and how many rounds they were getting out of them before scrapping the weapons or requiring major repairs. They had high praises for the factory MP5's, assortment of AK's from many countries, Uzi's, FN SCAR's, and even various mil spec AR's. The HK MR556- not so much.