What do you mean by "sloppy machining"? Are you saying that the Spikes is out of spec? The pin holes are rough and gritty? Please clarify.
Also, do you have any pics of the magwell you're talking about? I'd be interested in seeing what you describe.
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You are trying to pin my down on my general impression with the lower I bought. I have not sat down and gauged the thing out. My observation is in general the fit of the machining is not what I would like to see. It's the one part I will replace when the market loosens up.