Ensure perfect alignment between your AR10/15 barrel port and your gas block. Our alignment pins can be used universally between any standard 3/4 inch inner diameter gas block and barrel combination, regardless of manufacturer. Please see our video for a demo on how quick and easy proper gas block installation can be when using this tool.
• Fits .308, 300BLK, 7.62, or any 30 caliber round.
• Low Profile, Adjustable, Flip-up Sight Blocks.
• Use with any 3/4 inch or larger diameter barrel.
• 6 pin diameters for precise alignment.
• Mark and dimple barrel, perfectly every time.
Designed and Manufactured completely in USA.
Gunsmith Installation Recommended for All Parts.
https://www.youtube.com/watch?v=V4f9stp4SWE