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Old 02-12-2009, 6:33 PM
freakshow10mm freakshow10mm is offline
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Location: Michigan
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I've never heard of quality issues with the commercial type. Just because something is labled "mil spec" doesn't mean higher quality. For some reason ARFCOM loves that stuff. I've been building my own ARs for almost 10 years now and have built guns with both types of receiver extensions and never had an issue with the commercial type. The wobbles came from the "mil spec" tubes.
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