If they're like mine (from CDNN), they're fine. Expect a few minor teething problems:
1. Getting the last 2 rounds in is a real b***h. Leave 'em loaded up for a few weeks, the springs will relax a little.
2. 3 of my 4 experienced FTF on the first round out when loaded up to 17. I think this has something to do with that arse-kicker of a mag spring being so strong- the slide can't strip the round from the mag. Again, the spring relaxes and this, apparently, disappears over time. I say apparently since I just noted the problem 2 weeks ago....but thats what others say will happen.
Mike
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"A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects." -Robert Heinlein