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Ar-15 Low Profile Gas Blocks - Low Profile Gas Block .625'''' W/No Logo For Ar-15 Phosphate
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$25.49
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SKU: 100054366
Overview
This low-profile gas block is designed for AR-15 builds that call for a compact, unobtrusive fit under the handguard. It is offered in a plain, no-logo version and is available in phosphate or nitride finish options, with fitment for barrels in .625, .750, .825, and .936 OD sizes. Built from 4150 hardened steel and secured with steel 10-32 x 3/16 knurled cup point set screws, it suits builders looking for a straightforward, purpose-built component. A roll pin is not included, and Aero Precision notes that non-permanent thread locker is preferred if 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
Available Phosphate
Phosphate or nitride coating options
Plain, No-logo
Version offers a clean, understated
Key Features
- Low-profile gas block for AR-15 fitment.
- Fits .625, .750, .825, and .936 OD barrels.
- Constructed from 4150 hardened steel.
- Phosphate-coated finish.
- Uses steel 10-32 x 3/16 knurled cup point set screws.
- Roll pin not included.
Best Used For
- Builders setting up an AR-15 barrel with .625-inch gas block journal compatibility.
- Users wanting a low-profile gas block for a cleaner fit under handguards.
- Shooters who prefer a plain, no-logo component on their rifle build.
- Owners selecting a phosphate-finished gas block for an Aero Precision parts list.
- Assemblers who need included steel set screws and will source a separate roll pin.
Specifications
| Blade Finish | Phosphate or nitride coating |
|---|---|
| Country Of Origin | USA |
| Fits Barrels With | .625, .750, .825, .936OD's |
| Logo | No logo |
| Material | 4150 hardened steel |
| Profile | Low profile |
| Roll Pin Included | No |
| Set Screws | Steel 10-32 x 3/16 Knurled Cup Point |
| Thread Locker Recommendation | Do not use red thread locker; use non permanent variety if thread locker is used |
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.
- Available with phosphate or nitride coating options.
- Plain, no-logo version offers a clean, understated appearance.
- Includes steel 10-32 x 3/16 knurled cup point set screws.
Considerations & Trade-offs
- Fits only barrels with a .625" diameter at the gas block journal, so it is not a universal option across AR-15 builds.
- A roll pin is not included, so installation may require sourcing that part separately.
- Aero notes that red thread locker is not recommended on the set screw threads; if thread locker is used, a non-permanent type is preferred.
- The low-profile design is intended for fitment clearance, which may not suit builds that need a more prominent gas block profile.
Suggested Comparisons
- AR-15 gas blocks
- Low-profile gas blocks
- Phosphate-finished firearm components
- Nitride-finished firearm components
Suggested Accessories
- Roll pin
- Non-permanent thread locker
- Barrel nut wrench
- Armorer's wrench
Frequently Asked Questions
What barrel size does this gas block fit?
This model is listed as fitting .625 OD barrels. The product data also says Aero Precision gas blocks are available for .750, .825, and .936 OD barrels in other versions.
Does this version have the Aero logo?
No. This product is the plain version, described as "No Logo."
What finish is on this gas block?
It is listed with a phosphate coating.
Is the roll pin included?
No. The product data states that the roll pin is not included.
What should I know about installation hardware or thread locker?
The gas block uses steel 10-32 x 3/16 knurled cup point set screws. The product notes do not recommend red thread locker on the set screw threads; if thread locker is used, a non-permanent variety is recommended.