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Sent it off last night for round 2 without swapping BCGs or any other components, will certainly keep everyone updated on the outcome.
Nathan - you're entirely correct in the assumption that it is an outsourced conglomeration assembled by a relatively well-known company. While there is definitely a huge (perhaps unjustified) markup, I've put way beyond thousands of rounds through rifles from the same "manufacturer" and a few even survived a house fire. Though I've certainly overpaid by a margin, definitely have/had brand loyalty up until this point.
Ammo is PMC x-Tac 55g FMJ - pretty run of the mill 5.56 from what I've read. Interesting thing is that performance begins to severely degrade as the rifle heats up. First 5-8 rounds well reliably eject at a 2-3 o'clock pattern with bolt lock on empty, then move to 4-5 o'clock on next few, then bolt will begin to fail to lock open, and finally (20 or so rounds in with minimal cooldown time) bolt will fail to strip another round from the mag + fired casings barely eject. Leads me to believe that something is falling out of spec as the rifle heats up and metal expands, but I am by no means an expert on the topic. I noted this pattern on original return but armorer may have fired only a few rounds and called it good before malfunctions began. Hoping this time around has a better outcome.
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