06-20-2011, 01:54 PM
I'm going to agree with glane5910 that it appears a gas issue. Check the gas block alignment to the gas port. If you remove the gas block, you should see a carbon stain on the barrel (at least on stainless) that indicates where the gas block hole is. Also make sure the gas tube is straight. I've also heard (not verified) that if the gaps in the gas rings on the bolt are aligned (they shouldn't be), it can cause cycling issues.
--Rootshot
--Rootshot
