I just watched those videos posted by SA Friday, and I gotta wave the BS flag.

He runs the AR wet, plus he dumps the crap out of the chamber before he fires.

He apparently runs the AK dry and leaves the crap in the receiver...no effin s*** your weapon will fail to work with rocks in the FCG, recoil spring, and blocking the bolt, that's no kind of test. Try maybe locking the AR bolt, filling with dirt, and releasing on a filled chamber to see how well it works.

Plus, I would not be surprised if .223 doesn't have the oomph to work that heavy BCG in a filthy weapon...he kind of takes pleasure in pointing out how fail the AK was...but maybe that's just a 3-gun shooter mentality (no offense to other 3-gun guys).

That said, it's gratifying to know that a properly maintained AR will work in a filthy environment

Rant over