Lantac USA Ultra Low Profile .750″ Gas Block and Gas Tube Builder



Product Description

Manufactured to the highest quality standards the GB750-S™ is designed to fit .750 diameter gas pad barrels and uses a 2 set screw design to securely retain the block in position. Comes complete with, #10-32 X .125” set screws and gas tube roll pin. Places the gas port hole at the correct .295” position from the shoulder.

  • 4140 Gun Barrel Steel.
  • Black Phosphate Finish, Type M.
  • Laser Engraved.
  • Ultra-Low Profile.
  • Diameter: 0.750” ID.
  • Length: 0.875”.
  • Weight: 1.2oz.
  • Made in the USA.
  • Choose from a selection of gas tube lengths




Technical Information

Color / Pattern
Finish Nitride , Phosphate

Catalog Location

California Prop 65 Warning

WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information visit