
Originally Posted by
Breadman
I think I can help narrow down the op's problem. I'm interested in this as well. I have had identical problems with my 10.5 and a sd3g trigger. I actually moved the trigger to another rifle and replaced it with a s3g. This made it better, but I am still having the reset issue. Fwiw, I know my doubling was due to bump fire, but the failure to reset makes me crazy.
I know Geissele will give me a heavier spring set, but won't that make my trigger feel heavier? I bought these triggers because I wanted light and short.
I have a factory DD mk-18, 10.3". I use the original bolt carrier and a h2 buffer. My suppressor is also an AAC m4-2000.
My money for this is the H2 buffer slowing the carrier down too much when you don't have the back-pressure from the suppressor. The bolt is short-stroking and not pushing the hammer back far enough for it to catch on the disconnector. Try going back to the "H" buffer that came in the gun from the factory and see if that fixes it.
(FWIW, I also have a factory DD MK18). My buddy (Karmapolice on here) has a factory DD MK18 upper on a KAC lower. He was experiencing short-stroking that caused failures to eject when running an H2 in his lower. Switching back to the H buffer cured it.
Last edited by ASH556; 08-20-12 at 17:30.
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