M18C Slide Jamming On Full Auto
Posted 18 June 2011 - 09:02 AM
I can get the slide to un-jam by gently pushing holding the trigger forward as the slide returns to battery. However, this also seems to trigger the selector to switch to safe as the slide returns fully forward.
This is happening with both of these 18cs.
I have read a little about this online and cannot find an answer - have read everything from nozzle lube to nozzle springs to hammer assembly.
It is not the mag because I have tried multiple mags.
I do not believe it is the mag release because it is repeatable with holding the mag up.
I do not believe it is the nozzles or springs because these have been lubed and checked (both appear normal).
I do not believe the problem is in the slide because this happens with both uppers on both lowers but both uppers work fine on my other 18c lower (which has no problems).
I am wondering if this is a problem with the hammer not being reset properly, perhaps related to an upgraded hammer spring. Since these are second hand, I do not know what the internals are but they both had upgraded recoil springs/guides and upgrade feed ramps.
Posted 29 June 2011 - 09:04 AM
Could this be due to a worn sear or a hammer spring that is too strong? I'm not sure why either of these would cause problems only in full auto but not on semi, though. I have disassembled the hammer mech and the parts do not look particularly worn to me.
Posted 06 July 2011 - 04:48 PM
Posted 07 July 2011 - 07:39 AM
I have a few extra parts and have been meaning to try these...I thought maybe the hammer spring as well. But can you explain why you think this is the prob so I can look for problems after I swap them out?
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