10-06-2014, 09:45 PM
I was shooting Precision Firearms Sierra 123gr MK's. I will have to figure out the buffer weights, as I previously weighed them, but didn't mark them. I will have to look back at the thread on arfcom where it was suggested to run a carbine buffer with a rifle spring. Maybe I misunderstood the post. I switched to a carbine buffer and spring after the first failures and even put my Larue Super Duty Chrome Silicone spring in with a carbine buffer and it didn't change anything.
I marked and aligned the gas block for center of the port and the tube feels identical in the carrier key when moving it manually to all my other AR's. I'm wondering if being its virgin shoot that something from the install process worked its way out and either clogged the gas system after the first 15rds, or if it had just enough oomph to get it back then, but once it got a little dirty, didn't quite have enough. Thanks everyone for the input so far. Will probably tear it back down and see if I can find anything obvious.
I marked and aligned the gas block for center of the port and the tube feels identical in the carrier key when moving it manually to all my other AR's. I'm wondering if being its virgin shoot that something from the install process worked its way out and either clogged the gas system after the first 15rds, or if it had just enough oomph to get it back then, but once it got a little dirty, didn't quite have enough. Thanks everyone for the input so far. Will probably tear it back down and see if I can find anything obvious.