Aero Precision Low Profile Gas Block .750" - Set Screw

Manufactured by Aero Precision
SKU: APRH100122
MPN: APRH100122
Manufactured by Aero Precision
9 Reviews

In Stock

Standard orders will ship out within 1 business day if ordered by 3:30 pm CST, Monday-Friday. FFL orders will ship within 5 business days or less as long as we have the information for the transfer destination.

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The Aero Precision low profile gas block is manufactured from hardened 4150 chrome moly steel with a durable phosphate finish to protect against wear and corrosion for the entire lifespan of your rifle. With a low-profile design to fit under almost any free float handguard on the market, so you can fully customize your rifle. These AR-15 gas blocks are made in the U.S.A. and include a set of steel 10-32 x 3/16 knurled cup point set screws for securely attaching them to your barrel. With precise machining tolerances, you can expect perfect match to your barrel with .750 gas block journal and is compatible with all rifle and carbine length gas tubes. The time is now to upgrade your AR-15 and the Aero Precision low profile gas block is the solution if you plan on free floating your barrel.

NOTE: Aero Precision does not recommend the use of red thread locker on the set screws. If you decide to use thread locker, they recommend using a non-permanent variety.

  • Machined from 4150 chrome moly steel
  • .750” gas seat diameter
  • Set Screws: 10-32x3/16 knurled cup point
  • .485” set screw spacing for dimpled barrels
  • Phosphate coating
  • Low profile for easy fitment
  • Roll pin not included.
  • Weight: 1.6 oz

Aero Precision takes some of the most state of the art manufacturing techniques and equipment derived from their work in the aerospace industry and applies it to their products in the firearms industry. They have utilized their knowledge from years of building aircraft components to design and engineer AR-15 handguards, receiver sets, scope mounts, and more. They treat every product as if it were a precision flying machine and adhere to strict quality standards to ensure law enforcement, military, and civilian customers receive a product they can rely on.
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BrandAero Precision
FinishManganese Phosphate
Manufacturer.Aero Precision
Size.750 in
TypeLow Profile
Weight1.6 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

Ratings & Reviews

9 reviews

  • 3 stars
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  • 1 star
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If you need a .75 inch gas block and don't need or want the fancy titanium blocks then there's no need to spend any more when this will do the job perfectly. I would buy this again.

Works perfectly

by -

Worked perfectly in my latest build--BCA SOCCOM 16in-1:8 barrel, mid length gas tube; BCM bolt carrier; Aero upper; RRA lower. Functions flawlessly, excellent accuracy.

0.500" set screw spacing. Great block!

by -

Just so everyone knows, the set screw centers are 0.500". For those of us that dimple our barrels. Great gas block!

Great product

by -

fit perfectly and shipping was very fast.

Solid gas block for the money

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Nothing special. Works great!

Center to center .485

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Great block!
<br>Only thing is, package says set screw space is .485
<br>The add says .500

Great shipping times


Shipping was very fast, gas block went on fairly easy with a bit of tapping down, did not come with a roll pin but I already had one so that was not an issue

Works just fine

by -

It's a gas block :) Just keep in mind it doesn't come with a roll pin, so make sure your tube comes with one or order one.
<br>Using a KVP dimpling jig, use .500 for spacing. I would double check everything before trusting it on blind faith. Dimple the hole that's on the opposite side of the gas block [technically that's the only one that matters]. Then put on your gas block, tighten the screw that you dimpled and then tighten the screw that's closest to the muzzle end. It will leave a slight mark in the finish of your barrel, take off the gas block, put back on your jig and make sure the hole lines up.


by -

Easy to install, works great with no issues.