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Radical Firearms RF Micro Adjustable Gas Block .750 ADJGB750

Radical Firearms RF Micro Adjustable Gas Block .7504140, Phosphate Coating, Black, ADJGB750
Radical Firearms RF Micro Adjustable Gas Block .7504140, Phosphate Coating, Black, ADJGB750
Radical Firearms RF Micro Adjustable Gas Block .7504140, Phosphate Coating, Black, ADJGB750
1 of 2 images
Radical Firearms RF Micro Adjustable Gas Block .7504140, Phosphate Coating, Black, ADJGB750
Radical Firearms RF Micro Adjustable Gas Block .7504140, Phosphate Coating, Black, ADJGB750
2 of 2 images
Radical Firearms RF Micro Adjustable Gas Block .7504140, Phosphate Coating, Black, ADJGB750

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Questions & Answers
Is this a "Low Profile" gas block? Expert Answer

Yes, it is.

by Jonathan D., Gear Expert, November 20, 2019
What size allen wrench is needed? My smallest is just a hair too big.

the allen key size is 3/64 i believe.

by Nathan, Verified Owner, May 12, 2019
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
Turn front screw in to lower gas flow not out! by JS, Verified Owner, March 8, 2019
I think some people don't understand how to properly turn the Allen keyed screws to lower gas flow. I'd recommend installing your gas tube into block first, turn set screw on side all the way out, to allow adjustment screw to turn in without binding....
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8/8 found this helpful
Helpful Positive Review
The price is right and it worked fine by OLDDOG, Verified Owner, April 25, 2019
I installed is on a severely over gassed AR 15 pistol with a 7.5" bbl, shooting 5,56 62 gr green points. The ejection was almost @ 1;00 (straight out)and the gun kicked like a mule. Installed this block with locktite, backed the lock screw out, close...
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3/3 found this helpful
Helpful Positive Review
Great adjustable gas block at a low price on O.P. by JS, Verified Owner, February 28, 2019
I searched online for a micro adjustable gas block for my ar pistol and was amazed at how expensive most are. I found the Radical Firearms .750 adjustable gas block the cheapest on Optics Planet so I searched the reviews online & found mixed reviews....
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1/1 found this helpful
Helpful Negative Review
Doesn’t do anything special for .308 by Jake, March 1, 2019
I recently put this on my Aero Percision AR-10 in .308 hoping this would allow me to tune the gas system and make the rifle a little easier when it comes to cycling. After putting it on I noticed that even with the adjustment screw backed all the way...
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2/29 found this helpful
Most Recent Reviews
Radical Firearms RF Micro Adjustable Gas Block .750 by AnaManuela, February 13, 2019
When I received my Radical Firearms RF Micro Adjustable Gas Block .750 was just in poor quality, gas block set screw holes are work cross-threaded and will not adjust or screw in to tighten. Just don't wanna go though the trouble trying to send it b...
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1/2 found this helpful
Most Recent Reviews
Doesn’t do anything special for .308 by Jake, March 1, 2019
I recently put this on my Aero Percision AR-10 in .308 hoping this would allow me to tune the gas system and make the rifle a little easier when it comes to cycling. After putting it on I noticed that even with the adjustment screw backed all the way...
Read More...
0/9 found this helpful
Read All 6 Reviews

Product Discontinued by Manufacturer

Radical Firearms RF Micro Adjustable Gas Block .750 has been discontinued by Radical Firearms and is no longer available. Our product experts have helped us select these available replacements below.You can also explore other items in the Gun Parts, AR 15 Parts, Rifle Parts, AR15 Upper Parts, AR Gas Blocks yourself to try and find the perfect replacement for you!

Product Info for Radical Firearms RF Micro Adjustable Gas Block .750

RF Micro Adjustable Gas Block .750 (Front Adjustable)image

4140, Phosphate Coating

Package Contents:

  • Radical Firearms RF Micro Adjustable Gas Block .750

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Radical Firearms RF Micro Adjustable Gas Block .750 Unavailable & Discontinued Models

List of Unorderable Models

  • Radical Firearms RF Micro Adjustable Gas Block .7504140, Phosphate Coating, Black, ADJGB750 , MPN: ADJGB750 , UPC: 814034022460 , Code: 2CS-RGB-RGBRFM-ADJGB750
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Last updated 2026-10-09 UTC.