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Posted: 12/4/2007 4:38:51 AM EDT
| I've just finished putting another AR together and when the bolt is pulled back, the release.catch has a rough/gritty feel to it, rather than a smooth crisp break when the bolt is releasd. - What can cause this? It moves freely when upper is taken off, and there isn't any pressure on it. |
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Lock the bolt back on the catch, pull the CH all the way back and let the CH fly forward, the bolt catch should drop out of the way and allow the bolt charge home. Another check is to just lock the bolt back on the catch, then bang the butt stock on the ground hard. The bolt should charge forward as well with the catch dropping out of the way (no mags inserted into the rifle on either test). If the rifle passes both tests, then it's new/rough parts that need to self polish through use/live fire. |
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