09-29-2013, 03:08 AM
I measured the width inside the SMR at 1.35. What I did tonight and have not tested yet was to remove the steel weights and aluminum spacer from inside the A2 buffer and fill it completely with lead shot. All I had to weight it with was some crappy kitchen scales but they show a weight increase of over 2 oz. My Grendel functions fine, but I am getting a lot of brass swipe on my case deflector and severely dented case necks. I have read this is a sign of early unlocking.