My boss has the LWRC REPR and it will not cycle.
This is interesting. With many different ammo types or one? Unless it is some major issue, most likely the gas block is off somehow or if its adjustable in the off/low setting.
So many good guns in 7.62 right now. I've really been getting into them. My M1A SocomII is a blast to shoot but the 16" barrel is limiting. All the Larue rifles are awesome but be prepared to pony up a lot of cash or for a long wait. I have the 7.62 PredatAR but I would get a PredatOBR if buying now. My Scar 17 is light and easy to shoot. Other than that a FAL would be cool, I love the iron sights on them. The Knights SR-25 is used by out military but they are expensive.