The UTG AR15 Micro Gas Block – Matte Black is a robust, durable gas block, designed for your AR15. It is durable and corrosion resistant.

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The UTG AR15 Micro Gas Block – Matte Black is a robust, durable gas block, designed for your AR15. This low profile micro gas block provide you with a smoother recoil, accurate and faster shots and a fulfilling shooting experience. This gas block fits underneath most free float handguards, and is precision machined from steel, to exacting tolerances for optimal fit on .750″ diameter barrels at the gas port.

The UTG Micro Gas Block features a manganese phosphate finish, which is highly durable and corrosion resistant, so it is built to last.


  • Durable
  • Low profile
  • Precision machined
  • Steel construction
  • Corrosion resistant
  • Weight: 1.5oz.
  • Pieces: 1.
  • Length: 1.15 inch.
  • Width: 0.90 inch.
  • Inner Diameter: 0.75 inch

ApplicationLaw Enforcement, Security, Tactical, Sport Shooting


Material Steel
Weight 1.5 oz
Length 1.15 inch
Width 0.90 inch
Height 1.29 inch
Inner Diameter 0.75 inch
Includes Gas Tube Roll Pin, Serrated Self-locking Set Screws, Installation Tool

Manufacturer’s Website

Frequently asked questions:

Q: How can I tell what size of gas block I need?
A: The gas block size is based on the outside diameter of your barrel. The most common size is .75″ (this is the military standard). If you aren’t sure – use calipers to measure the diameter of the barrel, in the area where the gas block sits. Or alternatively, you can try looking up the make and model of your rifle online for more details.
Q: How do I know if this gas block will fit under my handguard?
A: Our micro gas blocks are as small as you will find on the market. They are guaranteed to work with our AT3 handguards, and they should be compatible with all the other handguards out there!

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