My DTM-serial, Blue Star manual, M&P15-22 blew her extractor at round 326 or so mid-December. Second weekend after 300 rounds the first.
Went to S&W immediately and was back on Christmas Eve. Over 1000 rounds since with only a handful of failures to feed. All feeding failures were CCI, by the way; the Winchester 333 is shooting beautifully.
-- Chuck
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