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    The Best Value in Adjustable Gas Blocks!

    This combo includes your choice of 4 different sizes of gas block, your choice of 4 different gas tube lengths, plus roll pin.

    How to purchase:

    Use the dropdown menus to choose your size of gas block and gas tube length. Not sure what size you need? Check out the FAQ at the bottom of this page.

    About the Wojtek Weaponry Adjustable Gas Blocks:

    • 4 sizes available: .625", .75", .825", and .936 (.75" is the most common size, but always measure the barrel if you aren't sure!)
    • Low profile design, perfect with most free float handguards
    • Premium steel construction (better than aluminum for withstanding extreme temperatures)
    • Clamp-on design using 3 set screws (screws, allen wrench and roll pin included)
    • Includes wrenches for installation and gas adjustment

    About the AT3 Gas Tubes:

    Premium stainless steel gas tubes, available in 4 lengths. Backed by a lifetime warranty.

    Not sure what size you need? Measure the distance from the barrel shoulder to the gas port on your barrel and compare to the chart below. (Carbine is the most common length).

    Distance to port:

    Pistol = 4 inches
    Carbine = 7 inches
    Mid = 9 inches
    Rifle = 12 inches

    More details:

    Wojtek Weaponry Gas Block Specifications:

    • Material: 1018 Steel, Black Finish
    • Length: 1"
    • Height: Sits 3/8" off of the barrel (fits under all free float handguards)
    • Weight: 1.5-1.8oz depending on size

    AT3 Gas Tube Specifications:

    • Material: Stainless Steel
    • Finish: Natural

    Total Tube Length:

    • Pistol: 6 3/4"
    • Carbine: 9 3/4"
    • Mid-length: 11 3/4"
    • Rifle: 15 1/4"

     

    Frequently asked questions: 
     
    Q: How can I tell what size of gas block I need?
    A: The gas block size is based on the outside diameter of your barrel. The most common size is .75" (this is the military standard). If you aren't sure - use calipers to measure  the diameter of the barrel, in the area where the gas block sits. Or alternatively, you can try looking up the make and model of your rifle online for more details.
    Q: How do I know if this gas block will fit under my handguard? 
    A: Our micro gas blocks are as small as you will find on the market. They are guaranteed to work with our AT3 handguards, and they are compatible with all the other handguards out there!
    Q: How do I know what size of gas tube I need? 
    A: Measure the distance from the barrel shoulder to the gas port on your barrel and compare to the list below. (Carbine is the most common length).
    Distance to port:
    Pistol = 4 inches
    Carbine = 7 inches
    Mid = 9 inches
    Rifle = 12 inches

    Have Questions About this Product?

    Ask Us Now

    Customer Reviews

    Based on 1 review
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    A
    A.R.
    for a new build

    Not sure how it works yet as I'm still working on this build. Seems to be good quality, the gas tube was formed right, it came with all the Allen wrenches and an extra roll pin. The Allen wrenches are extra long so you can get to the adjusting screw pretty easily. I have the mid length gas tube and a 12 inch hand guard and can reach it with the supplied wrenches. Giving it 4 stars until I see how it works.

    Thanks for the review Alan. We're available with any product questions you may have. You can reach out to us through chat or email - AB