Correct, left to right as seen from stock to muzzle.
I've removed a few of these pins in my time and they can be a real pin in the @$$. Try heating up the gas block with a heat gun or hair dryer before tapping them out. Make sure the gas block and barrel are supported and be very careful not to deform the pins if you're planning to reuse them. There is a taper pin punch made with a concave surface designed specifically for removing these pins or you can pick up a 3/32" nail punch from your local hardware store that is virtually the same thing...
3-Piece Nail Punch Set
Some manufacturers will use a hydraulic press to set their taper pins, but with a proper punch and a little heat they should come right out for you...
I've removed a few of these pins in my time and they can be a real pin in the @$$. Try heating up the gas block with a heat gun or hair dryer before tapping them out. Make sure the gas block and barrel are supported and be very careful not to deform the pins if you're planning to reuse them. There is a taper pin punch made with a concave surface designed specifically for removing these pins or you can pick up a 3/32" nail punch from your local hardware store that is virtually the same thing...
3-Piece Nail Punch Set
Some manufacturers will use a hydraulic press to set their taper pins, but with a proper punch and a little heat they should come right out for you...