Post by Master Yoda on Sept 21, 2013 19:35:28 GMT -8
Hello: Please take your gas block off, and completely remove the screws from it. Now, take a strong light look into screw hole and should you should see that your gas tube is blocking part of the gas hole in the gas block. Remove the blockage using a drill bit and your issues should be solved.
Post by mefunkymxw on Sept 21, 2013 20:53:26 GMT -8
i actually checked that out yesterday when i had the block/tube off and it didnt seem like there could have been 0.005-0.008" that the gas tube itself was impeding gas going down the tube. i honestly don't think that would have made the difference as i still had a few rounds out of the 20 that didn't even extract... ill email tonight and call the smith monday and tell him to check that out as well in the process, but i think there needs to be more gas, whether it comes directly from the barrel or it makes it down the tube.
the dude that has it now is very competent and will step up the port as needed in very small increments. hes got rounds to test with between alterations, and is sensitive to potential overgasing.
Last Edit: Sept 21, 2013 20:58:28 GMT -8 by mefunkymxw
Post by mefunkymxw on Sept 23, 2013 15:47:27 GMT -8
ok, we got a cycling weapon now.
got it to a smith who did incremental testing, first he took the overlap on the gas tube off, tested 5 rounds (and it was still short cycling), then he opened the gas port from 0.099" to 0.101" and tested 5 more rounds (still not cycling reliably).... finally he opened the port up to 0.105" and that worked like a charm, the rest of the 10 rounds cycled like a champ.