MPN: GB-LP-625-3 / GB-LP-750-3


  • Low-profile design perfect for rail system
  • Weight saving drilled through design
  • 3 set screws for secure mounting
  • Made in U.S.A.


  • Material: Steel
  • Finish: QPQ Nitride
  • Length: 1"
  • Height:
    • 0.750 Model: 1.35"
    • 0.625 Model: 1.29"
  • Width:
    • 0.750 Model: 0.9"
    • 0.625 Model: 0.78"
  • Weight: 1.13 oz.
  • Fit: .750" or .625" diameter barrels


  • Any AR-15 and AR-10 barrel that has a .625" or .750" diameter at the gas port area.


  • 1x Faxon Low-Profile Gas Block
  • 3x Gas Block Set Screws


When you really want to master a rifle that functions on gas impingement, you need to install a quality gas block. The problem is, a lot of gas blocks just aren’t compatible with the best feeling handguards. There just isn’t enough clearance under many of today’s ergonomically designed forends for them. What you need is a quality, low profile gas block. The Faxon firearms Ultra Low-Profile Gas Block is just what you need to fit the bill and your hand guard.

Faxon Quality

Faxon gas blocks are manufactured from excellent quality steel and finished in the same lustrous black finish that Faxon uses on their barrels. Faxon Gas blocks are designed to work for lightweight, low profile builds so the barrel path is directly through the center of the block. A three-point Allen key fastening arrangement tightens the block in place.

Choose Your Diameter

Faxon Firearms offers their Ultra Low-Profile Gas Blocks to fit both .625” and .750” barrel diameters, simply choose the one you need. They accommodate any .625” or .750” barrel with a standard sized gas journal. These gas blocks stand just an inch and 7/32 tall, so they should fit under pretty much any rail you choose.

Installation Tips

Faxon Firearms wants you to have the best possible experience with tier Ultra Low Profile Gas Blocks. To that end, they offer a couple of reminders: The use of an appropriate thread locker for the heat of an active firearm is advised as added insurance to the security of their 3-point Allen screw tightening arrangement. Faxon does not include roll pins with their gas blocks. When you purchase your gas tube please make sure you also receive a roll pin.

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Reviews (10)

  • Faxon Gas block

    Posted by Bobby Johnson on 19th Mar 2023

    Very low profile and works great.

  • Faxon gas block

    Posted by Eezystreete on 28th Dec 2022

    I have been very satisfied with these Faxon gas blocks. Clean machining and durable finish. It does not hurt to have the peace of mind of 3 set screws rather than 2. Lightweight with cutouts but solid steel for reliability. Great all around piece of engineering. Wing tactical service and shipping is the best in the business. No reason to shop elsewhere.

  • Faxon Firearms ultra low pro Gas Block

    Posted by Bea on 23rd Nov 2021

    Looks nice fits nice works nice, nice price.

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