Hey H8Dirt, congrats on the Ruger. Was looking at that model myself. I would try some good ol' fashioned lock-tite..
I personally went with the Bushmaster piston design. Just a few companies are offering the piston design AR/M4. Question..
After firing many rounds, how was the condition of bolt and upper ? Dirty or pretty clean ?
Gunpowder Addict For 40 Years Now