Just finished building up an area 15 from one of their pistol build kits. Noticed some issues right away.
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Just as a follow up. They did fix it at no cost. Looking at the machining it looks a bit rough but oh well, it works.
Bummer, I have the same pistol upper. Need to check the QD slot. As for the lower, I think that's an Anderson issue. I test fitted mine on Aero's and ended up building a Spikes for it. No fit issues.