The AT3 Long Low Profile Gas Block is designed to cover up barrel scars that are left after removing an AR-15 front sight base.



  • 3/4″ (.75″) size – works with any .75″ AR-15 barrel
  • Perfect for use with long AR15 handguards that cover the gas block
  • Length is designed to cover up blemishes on barrel after removing front sight base
  • Secured with 3 set screws (screws, allen wrench and roll pin included)
  • Backed by the Lifetime AT3 Warranty

AT3™ .75″ (3/4″) Low Profile Long Gas Block – Steel

SKU: 000000001433
    • Material: 4150 steel
    • Finish: Phosphate coating (matte black)
    • Length: see pictures
    • Inside Diameter: .75″
    • Weight: 2.7oz





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Hickory, NC, USA

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