Apparently Andrew over at Vuurwapen Blog fired enough lo-bujit rounds through an AR midlength carbine in a short enough amount of time that the handguards burst into flame*.
So some people started slamming the MagPul MOE handguards.
Let me get this straight: He puts half a case of steel-cased Russkie ammo through the carbine in about as much time as it takes to play a Slipknot tune, and the handguards are defective because they caught fire?
Some people would bitch if you hanged them with a new rope...
*Raise your hand if you've ever melted or ignited the furniture on a long gun in the name of science. I have, but it was low-rent East Bloc hardware, back in the day when you could get an SKS and a case of ammo for not much more than dinner at Outback. Cosmoline smells like petroleum-soaked sweat socks when it burns, BTW.