• Low-profile design allow this adjustable gas block to fit inside most rail systems
  • Allow users to lessen or increase the amount of gas with the adjustment screw
  • Available in Clamp-on and Set screw version
  • Fits barrels with a .750 barrel diameter at the gas block location
  • Nitromet (salt bath nitrocarburized) coating provides a hardened surface and increases corrosion resistance
  • Install or adjust with the use of a common Allen keys (not included)
  • Gas tube roll pin not included


  • Material: Steel
  • Finish: Nitromet black
  • Length: 1"
  • Height: 1.45"
  • Width: 0.95"
  • Weight:
    • Set screw version: 1.69 oz.
    • Clamp-on version: 1.48 oz.


  • Any AR-15 and AR-10 barrel that has a .750" diameter at the gas port area.


  • 1x Nitromet Coated Adjustable Gas Block
  • 2x Set Screws (Set Screw Version)
  • 3x Mounting Screws (Clamp-On Version)
  • 1x Adjustment Screw
  • 1x Adjustment Locking Screw


If you want an adjustable gas block for your AR system there are a lot of options on today’s market. Wing Tactical is proud to offer a selection of adjustable gas blocks to help you find the perfect one for your build. If you’re looking for a micro adjustable gas block with a quality melonite finish, WMD Guns’ Nitromet adjustable low profile gas block is perfect for your needs.

Choose Your Configuration to Complete Your Gas System

WMD Guns offers two models of front adjustable gas block for .750 diameter barrels. Choose a set screw mounted micro adjustable gas block or a clamp style adjustable low-profile gas block. Either way, you get a quality front adjustable gas block finished with a durable Nitromet surface treatment that will allow you to fine-tune your rifle’s gas system.

Next Generation Coatings on WMD Components Perform for the Long Haul

The quality self-lubricious Nitromet treatment on WMD Guns’ adjustable low profile gas blocks helps keep the adjustable gas block clean and working as it should. The inherently slick Nitromet surface resists fouling so your gas block remains clear and adjustable when untreated gas blocks are beginning to corrode and plug up. Quality next-gen Nitromet coatings provide long service life, corrosion and wear resistance unmatched by other manufacturers Melonite coatings.

WMD Guns Specializes in Making Good Parts Great

WMD Guns designs their parts specifically to be compatible with the next generation coatings they apply using advanced application techniques. WMD’s parts aren’t random components coated just as a quick price upgrade. Every piece WMD produces is designed with function and fit in mind, including quality surface treatments like Nitromet applications and their own proprietary NiB-X treatment.

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Reviews (5)

  • Poor machine work on the inside of the clamp.

    Posted by Ryan on 16th Oct 2019

    Everything worked and fit fine on the replacement one that I got except for the bottom joint of the clamp. The whole bottom of the joint had two lips on both sides of the joint that feels smooth to the touch because it's anodized. From what other reviewers said I was expecting to feel a sharp burr, but it's just a raised lip that will scratch your barrel as you put it on. It scratched my barrel a bit so not too happy about that. I was in a hurry to get the rifle working for hunting season so instead of sending this one back I used a rat tail round file to remove the two high spots on both sides of the joint. On the original one that was sent, one of the screw holes on the clamp portion was drilled too deep so the screw had nothing to purchase against and slipped right through the hole.

  • Wmd gas block

    Posted by Unknown on 2nd Jul 2019

    Great price but you get what you pay for. Needs to be debured or it will leave deep scratches in barrel.

  • WMD Adjustable Gas Block

    Posted by Robert on 6th Mar 2019

    Because of stupid PA big game laws, I used this with no gas tube to make a manual AR for my two young kids to use. Finish is very nice and looks like it will very easy to tune once the time comes. However, as I was sliding it on there must have been a burr on the inside as it scratched the gas block barrel seat. Not to concerned as the barrel was a $60 BCA barrel and I can always break down to cerakote it later. But if it was an expensive barrel I would likely have been irate. Make sure to check for burrs before installation, otherwise I would recommend.

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