01-04-2012, 07:08 AM
+1 for the PRI Gas Buster charge handle. I haven't noticed much of a difference, if at all with op-rod driven AR's versus DI. There still is backblast from the ejection port, which can't be eliminated in a self-loading design without major redesign. It's only somewhat problematic if you shoot on automatic, where a significant gas cloud chokes you.
