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Old 10-13-2007, 12:42 PM   #1 (permalink)
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be raptor sputtering

sometimes it will recock fully and be fine. most of the time, however, it sputters and won't recock. i have to then recock it. it happens so irregularly but more of the time than not.

i assume it's either:

1. a problem with the sear

2. or the hammer spring is weak

i've a full tank and gun is getting the pressure it needs and is properly lubed. the spring is pretty old and if i crank up the velocity, it does seem to lessen the problem SOME, but not much. so i'm really thinking it's the sear. but what to do?
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Old 10-13-2007, 01:11 PM   #2 (permalink)
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Take the trigger frame off the marker and look at the top corner of the sear. if it's rounded off, replace it, or file it square. If it's still a sharp edge, your sear spring needs to be replaced, if not look at the striker, if the surface where the sear catches is worn down, you need to replace that.
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Old 10-13-2007, 03:38 PM   #3 (permalink)
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The sear on Raptors is one of the weak points, and they're hard to come by. I've had success slightly deepening the notch on the hammer to give the sear a little more meat to bite into. Be careful not to deepen it too much, as you'll penetrate thru the wall.

Also, the valve has a grub screw holding it in place. If it's in too far and the valve is oriented with the re-cock hole towards the bottom, it can choke off the re-cock gas. Remove your striker and look at the valve, if it's oriented this way, rotate it so the hole's at the top.
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Old 10-13-2007, 04:13 PM   #4 (permalink)
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to add to Hurtcows comment, when I teched my friends raptor cause it would full auto and not recock I found that the valve lug was in to far and pinched on the valve stem holding the valve open some blue loctite fixed this problem.
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Old 10-14-2007, 05:08 AM   #5 (permalink)
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i never thought to look at the valve. i'll be getting to it on monday and will be sure to check that as well. thanks so much for the insight guys.
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