I have been having a few issues with my SS so far. Let me start by saying every time I have taken it out, it will run the first mag flawlessly. On the subsequent mag (I do let the gun cool) when firing in SS mode it it will give me a two round burst then one of 2 things will happen. 1.) A round will not chamber. This happens with usgi, tapco, magpul, and kci steel magazines. Chamber is empty. I can run the charging handle, it then it will fire but just the two rounds again. 2.) A round chambers but the carrier will not go into battery. I should have taken a picture, but I didn't think to. The BCG gets approximately 90% of the way closed then it gets hard stuck. When I say hard stuck I mean "mortar the firearm to clear the chamber" type hard stuck. I am unable to try pushing the forward assist hard enough to get it into battery as I would need a hammer to do so. (and that seems like a poor idea) I do not have any of these issues when firing in a normal semi-auto mode. The SS is from GreyMarketResearch. I am using a t3 buffer from Spike's Tactical.
