The Strike Industries Collar Adjustable Gas Block (brand part number SI-AR-CAGB) gives direct impingement AR-15 shooters five pre-sized gas settings plus a fully closed position, all dialed in from one rotating collar. Each setting returns to the exact same gas flow level every time, so you can fine-tune your rifle’s cycling for a suppressor, subsonic ammo, or a particular load without guessing. The collar rotates by hand when it’s exposed, or with a bullet tip or blade tool once it’s tucked inside a handguard. Sized at .750 inch and finished in black steel, it’s built to hold up to the heat and pressure right at the gas port.

Key Specifications

• Offers 5 pre-sized settings plus a fully closed position.
• Each setting returns to the exact same gas flow level every time.
• Built for direct impingement AR-15 systems.
• Adjusts by rotating the collar by hand or with a bullet tip/blade tool.
• Sized at .750 inch.
• Finished in black steel.

Frequently Asked Questions

How many gas settings does it have? Five pre-sized settings plus a fully closed position.

Can I adjust it with the handguard installed? Yes, once it’s inside a handguard you can rotate the collar with a bullet tip or blade tool.

What gas systems is it compatible with? Direct impingement AR-15 systems.

Buy the Strike Industries Collar Adjustable Gas Block

Strike Industries built this gas block for shooters who want real, repeatable gas tuning instead of a single fixed orifice. It’s a smart addition any time you’re running a suppressor or experimenting with different loads. Shop more Strike Industries parts or browse our full AR gas system selection to complete your build. Order it from our Lubbock, Texas gun shop for fast, reliable shipping.