• Low-Profile Design - Required for Free Float Rail!
  • Dual Set Screw Design for Secure Attachment
  • Precision CNC Machined 4140 Carbon Steel with Black Nitride Finish
  • Compatible with AR-10, LR-308 & AR-15

Low Profile AR-15 Gas Block .750" ID Includes:

  • 2 - Hardened Set Screws for Secure Attachment to Barrel
  • 1 - Gas Tube Roll Pin
  • Precision CNC Machined 4140 Carbon Steel with Black Nitride Finish
  • Compatible with AR-10, LR-308 & AR-15
A rugged, securely mounted gas block is a critical aspect of AR-15 reliability. This low profile gas block will fit underneath all popular free-floating rail systems, but heavy enough to evenly dissipate heat and resist gas leakage even in high-round count use. Precision CNC Machined from hardened 4140 Carbon Steel with a dark, corrosion resistant Black Nitride Finish that is the ideal gas block for a professional custom AR build. Precision bored to an Internal Diameter of .750” and perfect fit for your barrel of choice. Secures to barrel with provided hardened set screws.

M*CARBO offers replacement components for the AR-15, LR-308 that are made to strict military specifications. Low Profile AR-15 Gas Block is a high quality component that will provide an excellent fit and reliable function. M*CARBO AR-15 parts are perfect for upgrading existing factory components for superior reliability and performance. 

AR-15 Resources:

Use the following AR-15 Resources to further enhance your firearm. Download the Official Army Training Manual. Use the different Exploded Views of the AR-15 Parts Diagram to plan your next firearm project. Print or Download any of the AR-15 Resources.

M*CARBO No Hassle 100% Lifetime Guarantee:

The Low Profile AR-15 Gas Block is protected by the M*CARBO No Hassle 100% Lifetime Guarantee.

M*CARBO Lifetime Guarantee

Range Tested and Approved:

The Low Profile AR-15 Gas Block has been tested with numerous brands of civilian and military grade ammunition to ensure reliable operation and safety.

Veteran Owned and Operated Business:

American Made Parts designed and manufactured by Combat Veterans. We donate a portion of your purchase to the Military Foundations we humbly support.


You must be 18 yrs of age to purchase. We advise that all parts purchased from our inventory be installed and inspected by a qualified gunsmith. Modifying your weapon may be prohibited in your state. Do not modify your sear or hammer engagement surfaces, with or without the Low Profile AR-15 Gas Block. Before installing please be sure to check all local state and federal laws. By installing this part you agree to take full responsibility for any and all legal, health and warranty consequences that may be incurred.

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