CMMG Zeroed Adjustable Gas Block .750″ Nitride

The CMMG Zeroed Adjustable Gas Block is a low-profile gas control component designed for AR-15 platforms. It provides a 20-position detent adjustment that lets users fine-tune gas flow for varied ammunition and suppressed setups. A sacrificial cleanout chamber and user-serviceable design simplify maintenance and carbon management. The part is finished with a nitride treatment on 4140 steel for enhanced surface hardness and corrosion resistance.

Key Specifications

• The internal diameter is .750″.
• The finish is Nitride.
• The material is 4140 steel.
• The model name is Zeroed.
• It features 20-position gas adjustment settings.
• Adjustment uses a tactile detent front adjuster.
• The design includes a sacrificial cleanout chamber for carbon buildup.
• The product is user-serviceable.
• The design is low-profile.
• Intended for AR-15 platform gas systems.

Whether you are tuning an AR for optimal cycling with specific loads or configuring a suppressed setup, the CMMG Zeroed offers precise, repeatable gas control in a compact package. Built with serviceability in mind and finished for durability, it provides practical refinement to a rifle’s gas system while minimizing maintenance effort.