Originally Posted by emelioosluper
You'll notice 2 flats on the receiver end of the barrel. A gas block that's been installed correctly will have the front sight pin parallel to the flats.
The flats are also vertical when the barrel is timed correctly to the receiver.
I've built 20 or so and have yet to see a canted front sight/gas block, as the barrels were correct (if you're using an actual FAL barrel) when they left the factory. If you're using a US barrel with an installed gas block, all bets may be off.
The gas tube clearly does not line up with the notch on top of the barrel. The FSP also appears to be off. I will be giving Sarco a call to see what type of exchange can be arranged.