Superlative Arms Adjustable Gas Block .750" Set Screw—Melonite, QPQ

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The Superlative Arms Patented “Bleed Off”, direct impingement, gas block for the AR15/AR10/LR308 platform adjusts the gas flow by bleeding the gas out of the front of the block instead of restricting the flow like conventional adjustable blocks.

Proven Results:

  • The pressure used in the block is reduced only to the amount required to drive the bolt carrier. The remaining gas and pressure is bled out of the block allowing the system to run much cleaner and cooler.

  • Reduction of wear on the bolt carrier group components.

  • Reduction of felt recoil allowing for faster followup shots.

  • Patented adjustment detent is located outside of the block and therefore no contamination.

  • In bleed off mode, the gas adjustment screw does not restrict the gas flow; therefore there is no erosion or seizing of the screw, and no loss of detent due to carbon build up. Although it is removable, we have added a safety mechanism, which stops you from unintentionally backing the screw all the way out.

  • When using SBR’s and/or suppressors the bleed off port allows the excessive pressure to be exhausted out of the block reducing blow back.      


  • Gas Block Material: 416 SS
  • Finish: Melonite, QPQ
  • Barrel Diameter: 0.750"
  • Weight: 1.68 ounces
  • Length: 1.00"
  • Attachment Type: Solid Set Screw
  • Gas Adjustment: (Patented) 30 Locked Positions, Front of Block 
  • Bleed Off Port: (Patented) Front of Block which vents forward away from operator


  • Gas Block—Assembled
  • 10-32 x 1/4" Set Screws (2)
  • Gas Tube Roll Pin (1)
  • 3/32 x 6" L-Shaped Hex Key, Ball-end/Torx T-15 Tool (1)
  •  Instructions for Installation and Setup
  • 5
    Superlative Arms Gas Block

    Posted by Lance on Feb 1st 2021

    This is a highly sought after gas block that is sometimes hard to find. White Label had this in stock and shipped it out quickly to us. Fast Shipping and was exactly what we ordered. We will purchase again from White Label.

  • 5
    Great Product!

    Posted by James Kadlec on Jan 29th 2021

    Great product at a fair price. I have been using these on all my custom builds for many years. Very satisfied with fit, function and finish. Tuning my rifles/pistols takes only a few minutes and works especially well with suppressors. The included extra-long Allen wrench is a bonus that allows you to adjust the gas block without taking off the handguard. Highly recommend!

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