MPN: MOA-1034-750CAB / MOA-1034-750CA / MOA-1034-625CAB / MOA-1034-625-CA


  • Clamp-On mounting design
  • Allow users to fine tune their gas system for smoother cycling and operation
  • Attaches with one 8-32 screw and a quality Belleville washer to prevent backing out
  • Gas port can be fully closed
  • Titanium construction ensure it will perform under the harshest use while weighing less


  • Material: Aerospace grade Titanium
  • Finish: Black Tetrabond or Bead Blasted Raw Titanium finish
  • Weight: 0.6 oz. (includes screws)
  • Height: 1.225"
  • Length: 0.85"
  • Width: 1.06"
  • Internal Diameter: 0.750" or 0.625"


  • AR-15 and AR-10 barrel that has a 0.625" or 0.750" diameter at the gas port area


  • 1x Titanium Adjustable Gas Block
  • 1x 8-32 x 1/2" Low-Pro Cap Screw (require a T20 Torx key for installation - Not Included)
  • 1x 8-32 Belleville Washers
  • 1x 6-32 x 1x2" Stainless Adjustment Screw (require a 1/16" Hex key for installation - Not Included)
  • 1x 6-32 x 1x8" Stainless Locking Screw
  • 2x 5/64" x 1/2" Roll Pins


If you are a tactical firearm enthusiast assembling a lightweight rifle and need an adjustable gas block, you will find that Master of Arms Titanium Adjustable Gas Block is the component they've been wishing for. This may very well be the lightest adjustable gas block on the market, constructed of aerospace grade titanium precision machined for a low profile and flawless performance.

Why Master Of Arms Titanium Adjustable Gas Block?

The Master Of Arms Titanium Adjustable Gas Block is infinitely adjustable, you can set the management valve for customized, optimum performance on the firearm of your choice. Lock it in place with an ultra-reliable dual set screw design and your adjustment will hold, even under heavy use. The Master of Arms Titanium Adjustable Gas Block is easy to install. This titanium gas block was created with a clamp-on mount system that secures simply with one 8-32 screw and a durable Bellville washer. Your installation will be secure under fire and requires no liquid thread lock. With no springs to fail, weaken, or burn up, this gas block is as close to fail-proof as they come.

Aerospace Grade Titanium Construction

The Master of Arms Titanium Adjustable Gas Block is available in two sizes, for .750 and .625 inch diameter barrels, and comes in black or with a raw, bead blasted titanium finish. The American craftsmen of Master of Arms have created an adjustable gas block that is as attractive as it is functional. Each one is precision sculpted on state of the art CNC machines. The low profile design allows it to fit under a variety of handrails without clearance concerns.

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Reviews (8)

  • Needs work

    Posted by Chris Clark on 8th Apr 2020

    This gas block is great if you plan on tuning it to a particular load and never messing with it again. If you need to adjust it often for suppressors and various loads look elsewhere. The adjustment screw is very small and easy to strip out even with the proper sized Allen wrench. Mine stripped out pretty fast. They include an extra screw but it not something I can depend on to work in the long run. I just went with a Superlative arms AGB since I know they are extremely robust and use larger and harder screws. This one is light and secured tightly but lacks durability needed in a competition rig that is shot daily.

  • Works great!

    Posted by Unknown on 19th Aug 2019

    Works great and well made. Shot a 2-gun match this weekend without any issues. Much faster followup shots.

  • Very lightweight, but could use a few improvements

    Posted by Matthew on 1st May 2019

    This is a very lightweight and good looking adj. gas block, however there are a few improvements that could be made. For starters the hole for the gas tube is EXTREMELY tight. I wasn’t sure I would be able to get the gas tube in. However, there could have been an issue with the gas tube itself. But, the hole that the retaining pin for the gas tube could be improved. Because of the shape of the gas block, while it looks great, can make it difficult to put in the pin. I suggest making the hole slightly larger on the outsides on either side to help start the pin. All in all it is a good gas block, just a pain to get put together.

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