View Full Version : X-valve on off pin
rabidduck457
04-29-2009, 02:00 PM
I am having a problem with my friend's tac one. It is not resetting the bolt. I looked at a few things and the only thing I can see wrong is the on/off pin seems to be jagged on one end. Its uneven. The sear shows a little wear on it where the pin hits. Would that cause the problem I have or should I just start screwing with carriers. I had it tuned by my local shop and it worked fine for a few days then this started happening.
Watcher
04-29-2009, 04:03 PM
Looks like your local shop's "tuning" job was a hack job.
I'm guessing they filed down the on/off pin to get a better response. While that is possible, it is a big "no-no" to do it without a mill and a micrometer...
The on/off pin should be square at the ends, and seat easily on the sear.
Dend78
04-29-2009, 04:19 PM
yeah i would say get out your mic and a file and try to clean it up a bit, it shouldnt be jagged thats for sure.
secretweaponevan
04-29-2009, 04:59 PM
If the bolt sticks, you need a larger carrier. You want the largest one that doesn't leak.
If the bolt fails to reset after a jam, add a shim.
I'd get a new on/off pin too.
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