The low profile gas block attaches to the barrel in place of the standard front sight. it's bolt on design doesn't require the drilling and pinning like a standard front sight.
Barrel size: .750"
Material: Parkerized Steel
Coating: Magnesium Phosphate
Q: How do I install the gas block?
A: Unfortunately we don't offer instructions on how to install the gas block and strongly recommend that it be installed by a gunsmith.
Standard low profile gas block. No problems through 500 rounds. Needs to be sold with mid length gas tube for 16 mid length barrel. Using stag 16inch mid length barrel set gas block .025 from shoulder of barrel to center gas block and gas port if you don’t dimple barrel.