These are the AR carriers I had in our shop at the time. I will add more manufacturers as they 'come through my hands' so to speak. Of the brands listed (so far)I would only consider Colt, LMT & BCM 'proper' staking. Everything else should be restaked with a MOACKS tool by Ned Christiansen. Or at least by using a hammer and punch/chisel moving some metal into the carrier key screws. When the keys shoot loose the AR becomes a single shot or worse as it can try to feed a live round with an empty still in the upper.
Colt
LMT/current S&W have LMT carriers (non-Performance Center models)
BCM carrier
STAG/CMT/early S&W/early Noveske
Bushmaster
Rock River Arms
DPMS
after the use of the excellent MOACKS on Bushmaster carrier
early AR10 carrier where I've used a chisel and spring loaded punch to better stake
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