I have had second thoughts on cutting the barrel back (I have been going back and forth on this modification). I'm not going to save much weight at all by cutting it back, I will lose the front sight and will undoubtedly have an increased muzzle blast. Additionally, I may reduce any potential re-sale value by taking away the front sight. So, off to the range (ok, actually the back paddock) later today to see if the weak ejection has been solved by tightening the gas plug, checking that all areas are properly greased and smoothing the mag followers.