Originally Posted by FreakinJB
My team and I mostly shoot G6Rs and we all hit the field today after our winter hiatus. We all regularly maintain our guns and were all seeing breach breaks. All of us had issues with our poppits sticking open and venting after shooting a string of ~10 shots. We all completely disassmbled, ensured poppit springswere seated correctly and lubed (55) our poppit orings. All guns worked throughout the day but had minor breach leaks. This happened in cold weather to me last year and is frustrating to say the least. Any idea what's going on? Thanks in advance.
There are two things that really cause this. The first is when people lube the poppit o-ring during maintenance. The poppit o-ring does not need any lubrication during maintenance. If you do put any on there, it needs to be an extremely
light and almost non-existent coat. This o-ring actually gets lube on it from other parts of the gun during cycling and often gets too much caked on there and sticks. Another thing that can cause this is not having the poppit spring seated properly in the gun. The gun will often still cycle normal but will occasionally stick and even worse bind open if it is not seated properly.
I have had zero issues using Dow 55 in the cold but you will want to run a much lighter coat on the other components and as I said, I recommend running the poppit dry. You can sort of check the valve spring by removing the lpr and looking through the hole to get an idea but its best to just remove the halves and re-seat as you can sometimes not quite tell.