Groundhogs...

by Sarge , Central Misery, Saturday, February 18, 2017, 08:56 (2837 days ago) @ Byron
edited by Sarge, Saturday, February 18, 2017, 09:49

A good objective review of the M855 vs A1 variant can be found at-

https://www.americanrifleman.org/articles/2014/5/21/testing-the-army-s-m855a1-standard-...

Telling for me is the statement "A Special Operations Command test saw cracks appear on locking lugs and bolts at the cam pin holes on average at 6,000 rounds, but with as few as 3,000 rounds of “intense” full-automatic firing. The solution may be to find a means to count the number of rounds a rifle has fired."

Barrels and bolts can be replaced; but breakdowns will occur in combat, at those low round counts.

As most of us have known forever, it's counter-productive to overload a small cartridge trying to make it into a big one.