Well I ordered a stripped upper for my new build and paid for two day shipping….. that being said it took me almost 9 days to receive my item. Not only that, the holes for the take down pins are slightly off making it very difficult to assemble the upper and lower receiver which is also Matrix Arms.I’m gonna buy one more upper and lower receiver from them to see if maybe it was a fluke on machining. I will say the machining and coating is very good.
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Matrix Arms is an established family owned and operated high precision CNC firearm manufacturer located in “Live Free or Die” New Hampshire, USA.
