Gas System PartsAero PrecisionSold by Brownells

Aero Precision

Ar-15 Low Profile Gas Blocks - Low Profile Gas Block .875'''' W/No Logo For Ar-15 Nitride

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

Low-profile Gas

Block for AR-15 applications

Fits .875-inch

Barrel diameter

Plain, No-logo

Version

Constructed From

4150 hardened steel

Nitride-coated Finish

$25.49
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SKU: 100054376

Overview

This low-profile gas block is built for AR-15 setups that need a compact fit under handguards without extra branding. It is sized for .875" barrels and uses a nitride finish over 4150 hardened steel, with steel 10-32 x 3/16 knurled cup point set screws for installation. The plain, no-logo design keeps the profile clean for hunters and shooters who prefer a simple, functional build. A roll pin is not included, and Aero Precision notes that non-permanent thread locker is recommended if used.

Why Hunters Choose the Aero Precision

Low-profile Design

Supports easier fitment in compatible

Available Plain,

No-logo configuration for a clean

Constructed From

4150 hardened steel for a

Nitride Coating

Is listed among the available

Fits Barrels

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

Key Features

  • Low-profile gas block for AR-15 applications
  • Fits .875-inch barrel diameter
  • Plain, no-logo version
  • Constructed from 4150 hardened steel
  • Nitride-coated finish
  • Uses steel 10-32 x 3/16 knurled cup point set screws
  • Roll pin not included

Best Used For

  • Builders needing a low-profile gas block for an AR-15 barrel with .875 OD fitment
  • Users who want a plain, no-logo gas block for a cleaner rifle setup
  • AR-15 owners selecting a nitride-finished option from Aero Precision
  • Installers who prefer set-screw attachment and low-profile fitment
  • Shooters replacing or assembling a gas block with included steel set screws

Specifications

Blade FinishNitride
CoatingPhosphate or nitride coating
Country Of OriginUSA
Fits Barrels.625, .750, .825, .936OD
LogoNo logo
Material4150 hardened steel
ProfileLow profile
Roll Pin IncludedNo
Set ScrewsSteel 10-32 x 3/16 knurled cup point
Thread Locker NoteRed thread locker not recommended; use non-permanent variety if needed

Pros

  • Low-profile design supports easier fitment in compatible AR-15 builds.
  • Available in plain, no-logo configuration for a clean appearance.
  • Constructed from 4150 hardened steel for a robust component build.
  • Nitride coating is listed among the available finish options.
  • Fits barrels with .625, .750, .825, and .936 OD sizes.
  • 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 builds that need more clearance for larger handguards or accessories.
  • It is offered in multiple barrel sizes and finishes, so confirming the .875" fit and preferred coating before purchase is important.
  • Aero Precision advises against red thread locker on the set screws; if used, a non-permanent thread locker is recommended.

Suggested Comparisons

  • AR-15 gas blocks
  • Low-profile gas blocks
  • Phosphate or nitride-coated firearm components
  • Barrel accessory parts

Suggested Accessories

  • Roll pin
  • Non-permanent thread locker
  • Barrel installation tool
  • Torque wrench

Frequently Asked Questions

What barrel size does this low profile gas block fit?

The source data says Aero Precision gas blocks fit barrels with .625, .750, .825, and .936 OD options. This product title specifies .875, but .875 is not listed in the provided fitment details, so that size should be verified before purchase.

Is this gas block marked with a logo?

This version is described as "W/No Logo," so it is the plain version rather than the engraved Aero logo version.

What material and finish are listed for this gas block?

The source data lists 4150 hardened steel construction with a nitride coating. The broader product description also mentions phosphate or nitride coating across the line.

Does it include the roll pin?

No. The source data specifically says the roll pin is not included.

Are there any installation notes I should know about?

Yes. The source data says not to use red thread locker on the set screw threads. If thread locker is used, Aero Precision recommends a non-permanent variety.