Every gas-operated AR (those that don't use a piston system) uses a gas block of some type to cycle between shots. If you're building one of those old-school or retro style AR, yours may have a fixed front sight that doubles as the gas block or some similar fold-up variant. But if it's any number of countless newer designs, it'll probably have a gas block that serves only as the gas block. Plus, more often than not, it'll have a low-profile design, so that some type of handguard can slide over and around it to shield it. The handguard will have a length of pic rail on top on which you can then mount either a fixed or a folding sight to serve as the rifle's front sight. If you're in the latter group, this is your gas block. See below for more info.
Use our guide to install your gas block!
- Compatible with mid-length, carbine-length, and rifle/full-length barrels
- Compatible with any 5.56mm or .223 barrel with a .750"-diameter gas port
- Set screws included
- Diameter: 0.750"
- Net Weight: 1.5 oz.
- Color: Black
- Material: Steel
- Finish: Parkerized
- CNC Precision-Machined
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