[Curtis Tactics]

Fixed mine
Step 1: remove front sight with a slotted screwdriver
Step 2: remove allen screw from the rail
Step 3: with a mallet light tap the rail off, no twisting, its basically held in by
friction
Step 4: remove hex screw at the bottom of the gas block
Step 5: (hard part, requires alot of force) tap out both pins
Step 6: index gas block to desired fitting
Step 7: tap pins back in, making sure the gas block did not change
Step 8: screw hex crew back in
Step 9: gently tap rail back in and replace allen screw
Step 10: replace front sight