Simply the best! Notched Centurion Arms barrels and tabbed gas blocks. Freedom F#%k Yeah!
I picked up a lightly used Centurion barrel and wanted to match it with a Centurion gas block with the alignment tab since it wasn't pinned. Corrie was extremely helpful, so I placed an order once they came back in stock and put the request in the order details for the alignment tab version. I didn't know I could be so impressed by a gas tube and gas block. Fits the barrel like a glove, shipped quick, and rock solid. Thank you again, you've got a CA convert for life.