The Gas Block Genie Gas Block Alignment Tool (brand part no. GBG750) from Two Two Three Innovations is a must-have bench tool for anyone assembling an AR platform rifle, taking the guesswork out of setting gas block depth and angle. Built to fit all .750 inch barrels, it works with every style of gas block including clamp-on designs, walking an armorer through an easy 5-step process that ensures a perfectly aligned gas block on the first try rather than trial-and-error fitting.

Key Specifications

• Fits all .750 inch barrels, covering the most common AR-15 gas block diameter.
• Works with all gas block styles, including clamp-on designs.
• Uses an easy 5-step process to install the gas block at the correct depth and angle.
• Built from durable plastic sized for repeated bench use.
• Measures 4.2 inches in length, sized for one-handed alignment work.

Frequently Asked Questions

What barrel diameter does this tool fit? All .750 inch barrels.

Does it work with clamp-on gas blocks? Yes, it’s built to work with all gas block styles, including clamp-on designs.

How many steps does the alignment process take? An easy 5-step process that installs the gas block to the correct depth and angle.

Buy the Gas Block Genie AR-15 Alignment Tool

Note: this item cannot ship directly to California addresses. Getting gas block alignment right the first time saves a rebuild down the road. Order the Gas Block Genie from Two Two Three Innovations’s gunsmithing tools lineup for your next AR build.