Originally Posted by
lysander
You might think that . . . but, the new builds account for 64% of the Class III malfunctions, while the rebuilds account for 99% of the Class I/II stoppages.
Here are the results from the EPM (blue follower) tests, 9 M4A1s, 3 new, 3 PIP, and 3 rebuilds, and 6 M27s, all shooting 6,000 rounds each:
New - 6 Class I/II, 3 Class III
PIP - 15 Class I/II, 4 Class III*
Rebuilds - 2 Class I/II, 4 Class III
M27 (M855A1) - 14 Class I/II, 0 Class III**
M27 (M318) - 2 Class I/II, 1 Class III
The initial MR firing dispersion of the new and rebuilt weapons was pretty much the same: New - 3.1", Rebuilt - 3.6"
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* 10 of the Class I/IIs are from a single weapon
** evenly spread across all three weapons
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