Gas System PartsAero PrecisionSold by Brownells

Aero Precision

Ar-15 Low Profile Gas Blocks - Low Profile Gas Block .875'''' W/Aero Logo For Ar-15 Nitride

Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.

Low-profile Gas

Block designed for AR-15 fitment

Fits .875-inch

Barrel diameter

Aero Precision

Aero logo engraving

Constructed From

4150 hardened steel

Nitride-coated Finish

$35.99
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SKU: 100054372

Overview

This low-profile gas block is designed for AR-15 builds where a compact fit is needed under handguards or in other tight setups. It is sized for .875 OD barrels and features Aero Precision branding with a nitride finish. The block is constructed from 4150 hardened steel and uses steel 10-32 x 3/16 knurled cup point set screws for installation. A roll pin is not included, and Aero Precision notes that non-permanent thread locker is preferred if one is used.

Why Hunters Choose the Aero Precision

Low-profile Design

Supports easier fitment in compatible

Fits Barrels

.625, .750, .825, and .936

Constructed From

4150 hardened steel for a

Available Phosphate

Phosphate or nitride coating options

Engraved Aero

The Aero logo for a

Key Features

  • Low-profile gas block designed for AR-15 fitment.
  • Fits .875-inch barrel diameter.
  • Aero Precision model with Aero logo engraving.
  • Constructed from 4150 hardened steel.
  • Nitride-coated finish.
  • Includes steel 10-32 x 3/16 knurled cup point set screws.
  • Roll pin not included.

Best Used For

  • AR-15 builders choosing a low-profile gas block for a clean, compact barrel setup.
  • Users matching .875-inch barrel gas block dimensions and Aero Precision branding.
  • Builders wanting a nitride-finished gas block with included steel set screws.
  • Shooters assembling a rifle where easy fitment under handguards matters.
  • Owners who prefer a USA-made gas block and will source a separate roll pin.

Specifications

Alternative FinishPhosphate
Blade FinishNitride
Country Of OriginUSA
Fits Barrels With.625, .750, .825, .936 OD
LogoAero Logo
Material4150 hardened steel
ProfileLow profile
Roll Pin Includedfalse
Set ScrewsSteel 10-32 x 3/16 Knurled Cup Point
Thread Locker RecommendationDo not use red thread locker; use non permanent variety if needed

Pros

  • Low-profile design supports easier fitment in compatible AR-15 builds.
  • Fits barrels with .625, .750, .825, and .936 OD options.
  • Constructed from 4150 hardened steel for a durable component build.
  • Available with phosphate or nitride coating options.
  • Engraved with the Aero logo for a branded finish.
  • Includes steel 10-32 x 3/16 knurled cup point set screws.

Considerations & Trade-offs

  • Roll pin is not included, so installation requires sourcing that part separately.
  • The low-profile design is intended for fitment, but it may not suit setups that need more clearance or a different gas block profile.
  • Thread locker guidance is specific: red thread locker is not recommended on the set screw threads; a non-permanent variety is advised if used.
  • This model is sized for .875" barrels, so compatibility is limited to that barrel diameter.

Suggested Comparisons

  • AR-15 gas blocks
  • Low-profile gas blocks
  • Phosphate or nitride finished gas blocks
  • Barrel accessory components

Suggested Accessories

  • Roll pin
  • Thread locker (non-permanent)
  • Barrel nut wrench
  • Armorer's wrench

Frequently Asked Questions

What barrel sizes does this gas block fit?

According to the product data, this gas block fits barrels with .625, .750, .825, and .936 OD.

Is this the version with the Aero logo?

Yes. The title identifies this as the .875" low profile gas block with the Aero logo.

What finish does this gas block have?

The product data lists phosphate or nitride coating options. This specific title identifies the nitride version.

Does it include the roll pin?

No. The product information states that the roll pin is not included.

Are there any installation notes I should know?

Yes. Aero Precision notes that red thread locker is not recommended on the set screw threads. If thread locker is used, they recommend a non-permanent variety.