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Wojtek Weaponry Adjustable Gas Block + Gas Tube + Roll Pin Combo


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Lifetime WarrantyOn All AT3 Brand Products

All AT3 Tactical Brand Products carry a lifetime warranty against manufacturer’s defects.

This includes AT3 Red Dot Sights, Handguards, Iron Sights, and any other product that carries the “AT3 Tactical” or “AT3™” name. For other brands (ex. Magpul or Troy), please refer to the manufacturer’s warranty policy.

In the event that your AT3™ product becomes unusable, we will repair or replace the product at no charge to you.

If we cannot repair your product, we will replace it with a product in perfect working order of equal or better physical condition. The warranty is fully transferable, but we may require information about the original purchase to validate the authenticity of the product.

If your product is in need of warranty service, please contact AT3 Tactical to start the process

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Please note: The AT3 Lifetime Warranty does not cover loss, theft, intentional damage or cosmetic damage that doesn’t affect the performance of the product.

Fast & Free Shipping On orders over $50

You will receive fast, free shipping for all orders over $50

Shipping cost is $7.99 for orders under $50. We ship with UPS or USPS, depending on the item.

Most orders received by 1pm CST ship the same day

You will receive an email with tracking information at the time of shipment. To expedite shipping, we may ship your order from multiple warehouses. Orders placed on weekends, holidays, or after 1pm will ship the following business day.

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

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Customer Reviews

Based on 6 reviews
Wojtek blocks work

I haven’t purchased this from AT3, just found this site and saw them sold here. However, I have bought a few Wojtek AGB’s and am very satisfied with them. It’s a good product and the man behind them is an outstanding guy with great customer service and communication. All that being said, I don’t recommend these gas blocks for something that you’re constantly going to be adjusting, like if you’re regularly taking a whisper pickle on and off your AR and need to frequently regulate the amount of backpressure. For those applications I recommend a Superlative or SLR for the ease of making adjustments. However, where the Wojtek blocks shine are on applications where you want to tune the gun for proper function and/or recoil reduction, where once you get it dialed in it’ll stay that way and adjusting 2 screws requiring two different hex keys isn’t a big deal. The most recent one I bought was as a gift for my neighbor who got his only AR (S&W M&P Sport II) and was disappointed by the amount of recoil in comparison to my rifles. I didn’t believe the recoil in his M&P could be as bad as he said it was...until I shot it. And he didn’t believe my claims that an AGB would fix it. However, we needed to replace the factory FSB/gas block anyway to install a free-floating handguard I gave him, so we gave it a shot. It drastically reduced the recoil in his overgassed Smith & Wesson and made a lifelong AK-guy grow to love the benefit of a softer-shooting platform that allows him to make faster follow-up shots, and now it’s the rifle that he takes to the range with us the most often.

On both his rifle and my rifle, once I had the adjustment finalized I used a tiny dab of locktite ONLY on the set screw on the side of the block and haven’t had any issues.

Pics aren’t of his rifle, but of mine. The one with the gray furniture has a .625 Wojtek AGB on a Faxon 14.5” Gunner barrel with mid-length gas system under a V-Seven Lithium-Aluminum alloy (2099 I think...) l...

Thanks for sharing your feedback, Kris. We're glad you're satisfied with your purchase. Cheers!
Gas Block

Have not installed, or obviously fired it, however, we can report excellent casting, and porting work. Be advised there are no instructions regarding adjustment, however, the industry standard is 1/2 turn at a time, and its logical to assume this will work here also. We did like the triple lock down screw configuration, and the overall presentation of the bloc. We purchased a 625, and a 750, and both are stellar in workmanship.

Thanks for sharing your feedback, Chuck. We're glad you're satisfied with your purchase. Cheers!
Great product

Very good adjustable gas block at a great value. At3 is a pleasure to shop with.

Thanks for sharing your feedback, Keith. We're glad you're satisfied with your purchase. Cheers!

Fantastic machining and looks. Great finish. Unbeatable price. I'll never buy any other adjustable gas block. As for AT3... The shipping was FAST and the packaging was superb... I'll sum it up just stating that AT3 is "the" place to shop for your build. Their products are amazing and far exceed expectations.

Thanks for sharing your feedback. We're so glad you're satisfied with your purchase. Cheers!
Great Service

I ordered this combo set in size 936 with a rifle gas tube. Well my build wasn't going to work and there were other issue.

I found this out a day after I ordered from AT3, well I figured let me try to call and send an email, to see if I could change the order before it shipped.

AT3 is outstanding! They responded to the email quickly, and when I followed up with a call they changed my order to what I needed with no problem.

This might seem like a big deal to some, but great customer service does not happen everywhere. It's nice to see when it does.

Parts came in no issues.

Can't thank AT3 enough.

If u want great CS and parts for your next build look no further than AT3.

Thanks for sharing your feedback. We're glad you're satisfied with your purchase. Cheers!