Originally Posted by
NetJunkie
Looking at the SHOT pics... The way the piston locks/unlocks to the gas block is different. It now has a small spring loaded plunger/pin. You press that in and rotate the piston to unlock it. Then it just slides out. Reverse that for installation. The only other thing I notice is that the bolt isn't chromed. The specs now say they use some special lubricating finish so I assume that's why. It's so simple you really wonder where all the time was spent....but then again, I don't design rifles. :)