1. Home
  2. XP-GB

Expo Arms Low Profile Gas Block - .750"

Manufactured by Expo Arms
SKU: XP-GB
MPN: XP-GB
Manufactured by Expo Arms
31 Reviews
$16.99

In Stock

Non-FFL orders placed before 3:30pm CST will ship same business day. Non-FFL orders placed after 3:30pm CST will be shipped the next business day. FFL orders will ship within 3 business days once transfer details are provided.

For individual Officer, First Responder, and Military pricing please make sure you are logged in. for details

Details

Details

The Expo Arms Low Profile AR Gas Block is a precision machined steel gas block designed for use with barrels that feature a .750" gas seat diameter. Machined from high quality 4140 chrome moly steel with a durable manganese phosphate finish and features a secure dual-set screw mounting design that will fit under almost any free floated handguard system on the market! The set screws included with this AR gas block are made by McMaster-Carr and on top of being black-oxide alloy steel, they feature serrations on the cup edge to grab onto any surface creating a mechanical lock that will prevent loosening even without Loctite. Proudly made in the U.S.A.

Note: Roll pin not included.

Features:

  • 4140 Steel construction
  • Manganese Phosphate finish
  • .750" Internal Diameter
  • Low profile design
  • Black-oxide alloy steel set screws
  • Knurl-grip cup-point design prevents loosening
  • Made in the U.S.A.
See More

Specifications

AdjustableNon-Adjustable
BrandExpo Arms
Gas Seat Diameter.750
MaterialSteel
PlatformAR-15/AR-308
TypeSet Screw
Weight1.2 Oz
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to www.P65Warnings.ca.gov.

Ratings & Reviews

31 reviews

3.3

Good for the price

by

Expo arms gas tubes fit nicely into this block. Knurled set screws, 4140 steel. Closed off end. Great for the money

Great Customer Service

by -

Originally I had an issue with this gas block where I was unable to fully seat the gas tube. PA reached out and fixed my issue with a replacement. Thanks PA, I really appreciate the customer service!

Gas tube didn't fit

by -

I purchased a BCM barrel and decided to get the discounted Expo Arms Low Profile Gas Block and the Aero Industries Melonite Gas Tube. Received the parts and when assembly began I found the port for the gas tube to be very tight, to be honest I don't know if this was a gas tube issue or gas block issue. At any rate, I lubed the gas tube and began gently tapping the tube into the block and at the point in which the gas port in the tube was about to enter the block it froze in position. couldn't remove it or finish installing it. It is now a small piece of modern art. I have used the Aero gas tube previously without issue but not the Expo gas block. I would like to blame the gas block but I just don't know. Maybe the moral of this story for me is make sure you buy parts you have used previously that you trust and don't worry about a few dollars saved. Now it back to the drawing board.

Thank you for taking the time to speak with us today. We are glad we were able to get this resolved for you.

gas tube would not go into the block

by -

Bought the discounted low profile Expo Arms gas block and the Aero Precision melonite gas tube. To be honest I can't say whether it was the gas tube or the block that was the problem but in the end I tried to gently tap the gas tube into the block and unfortunately it got as far as the gas port in the tube and it froze there, even though I lubricated it. Turned into a modern art project, so it has been scrapped. This is the first time I have had this problem, lesson learned using discounted parts I guess.

Thank you for taking the time to share your feedback. We sincerely apologize that your recent experience with Primary Arms fell short of your expectations. We value your loyalty as a long-term customer and regret any frustration caused by the issue you encountered.

We strive to provide exceptional customer service and resolve all concerns efficiently. We'd appreciate it if you could share more details about the specific issue you faced. This information will help us investigate further and improve our processes to prevent similar situations.

We're committed to regaining your trust. If you'd be open to it, we'd like to discuss potential solutions and see if we can find a way to earn back your business.

Please feel free to email us at [email protected] Attention CS manager or call us directly at 713-344-9600 (please advise the agent you are returning the manager's call) to discuss this further.

Not junk after all

by -

Previously gave a bad review because the gas tube would not fully go into the block. After I had more time to check it out i found a burr on the inside at the cross pin hole. Used a jewelers file to remove it. It took some time to file it out which means it's made out good hard steel.. Keeping this for my high volume heavy duty build.

JUNK

by -

Gas tube hole too small. Do not have the right size drill bit. Will save the set screws ad throw it in the garbage.

Thank you for taking the time to share your feedback. We sincerely apologize that your recent experience with Primary Arms fell short of your expectations. We value your loyalty as a long-term customer and regret any frustration caused by the issue you encountered.

We strive to provide exceptional customer service and resolve all concerns efficiently. We'd appreciate it if you could share more details about the specific issue you faced. This information will help us investigate further and improve our processes to prevent similar situations.

We're committed to regaining your trust. If you'd be open to it, we'd like to discuss potential solutions and see if we can find a way to earn back your business.

Please feel free to email us at [email protected] Attention CS manager or call us directly at 713-344-9600 (please advise the agent you are returning the manager's call) to discuss this further.

Do not buy

by -

Like the other reviews say, You have to drill it out to get your gas tube to fit. Spend a little more and get a different block.

Thank you for taking the time to share your feedback. We sincerely apologize that your recent experience with Primary Arms fell short of your expectations. We value your loyalty as a long-term customer and regret any frustration caused by the issue you encountered.

We strive to provide exceptional customer service and resolve all concerns efficiently. We'd appreciate it if you could share more details about the specific issue you faced. This information will help us investigate further and improve our processes to prevent similar situations.

We're committed to regaining your trust. If you'd be open to it, we'd like to discuss potential solutions and see if we can find a way to earn back your business.

Please feel free to email us at [email protected] Attention CS manager or call us directly at 713-344-9600 (please advise the agent you are returning the manager's call) to discuss this further.

Poor machining

by -

I purchased this block with one of their gas tubes and ran into trouble when installing the tube. Everything seemed to fit with no issues until I tried to get the tube into the block. The tube got about halfway in and it got lodged and stuck. Tried everything to get it out but the tube eventually snapped off.

Thank you for taking the time to share your feedback. We sincerely apologize that your recent experience with Primary Arms fell short of your expectations. We value your loyalty as a long-term customer and regret any frustration caused by the issue you encountered.

We strive to provide exceptional customer service and resolve all concerns efficiently. We'd appreciate it if you could share more details about the specific issue you faced. This information will help us investigate further and improve our processes to prevent similar situations.

We're committed to regaining your trust. If you'd be open to it, we'd like to discuss potential solutions and see if we can find a way to earn back your business.

Please feel free to email us at [email protected] Attention CS manager or call us directly at 713-344-9600 (please advise the agent you are returning the manager's call) to discuss this further.

Out of spec

by -

Would not accept the expo arms gas tube I bought with it. Now I have to get a new gas block and gas tube and cant go to the range this weekend.

Thank you for taking the time to share your feedback. We sincerely apologize that your recent experience with Primary Arms fell short of your expectations. We value your loyalty as a long-term customer and regret any frustration caused by the issue you encountered.

We strive to provide exceptional customer service and resolve all concerns efficiently. We'd appreciate it if you could share more details about the specific issue you faced. This information will help us investigate further and improve our processes to prevent similar situations.

We're committed to regaining your trust. If you'd be open to it, we'd like to discuss potential solutions and see if we can find a way to earn back your business.

Please feel free to email us at [email protected] Attention CS manager or call us directly at 713-344-9600 (please advise the agent you are returning the manager's call) to discuss this further.

Out of spec

by -

The gas tube would not fully seat in the gas block. It was extremely tight when inserted the tube half way in. I pulled it out and try another gas tube same result. I had to drive to town get gas block from the LGS. I wasn't expecting perfection just a serviceable gas block.

Thank you for taking the time to share your feedback. We sincerely apologize that your recent experience with the Expo Arms gas tube fell short of your expectations. We value your loyalty as a long-term customer and regret any frustration caused by the issue you encountered.

We strive to provide exceptional customer service and resolve all concerns efficiently. We'd appreciate it if you could share more details about the specific issue you faced. This information will help us investigate further and improve our processes to prevent similar situations.

We're committed to regaining your trust. If you'd be open to it, we'd like to discuss potential solutions and see if we can find a way to earn back your business.

Please feel free to email us at [email protected] Attention CS manager or call us directly at 713-344-9600 (please advise the agent you are returning the manager's call) to discuss this further.