Uniquetek AR-15 Gas Block Aligner

The Gas Block Aligner ensures perfect alignment between the gas port hole in your AR15 barrel and gas block. Works with any standard 3/4″ inner diameter gas block and barrel combination, regardless of manufacturer.

• .22 caliber size fits .223/5.56x45, as well as any other .22 caliber rounds.
• Use with Low Profile, Adjustable, Railed, or Flip-up Sight Blocks.
• 6 pin diameters for precise alignment with various gas port diameters.
• Enables you to mark and dimple barrel perfectly every time.