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Ar-15 Gas Block Mk12 - Ar-15 Gas Block Mk12 .750 Steel Black
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
$78.99
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SKU: 093000026
Overview
This low-profile gas block is designed to replace a factory front sight base while leaving more room for optics and free-float handguards. Its streamlined form also helps reduce forward weight on the rifle, making it a practical choice for a clean, purpose-built setup. The package includes set screws, a gas tube mounting pin, and installation instructions, and it is sized for .750" O.D. barrels. Built by Badger Ordnance in 416 stainless steel with a black finish, it follows the Mk12 Mod 1 gas manifold pattern used on U.S. Army and Navy special purpose rifles.
Why Hunters Choose the Badger Ordnance
Low-profile Replacement
For factory front sight gas
Maximum Clearance
For optics and free-float handguards
Streamlined Profile
Reduces forward weight
Includes Set
Screws, gas tube mounting pin,
Fits .750-inch
O.D. barrels
Key Features
- Slim, low-profile replacement for factory front sight gas block.
- Provides maximum clearance for optics and free-float handguards.
- Includes set screws, gas tube mounting pin, and installation instructions.
- Mk 12 exact copy of the gas manifold on Mk12 Mod 1 and Mk 18 Mod 1 rifles.
- Fits barrels with .750" O.D.
- Made from 416 stainless steel with a black oxide finish.
Best Used For
- Hunters building a rifle with optics and a free-float handguard needing extra clearance.
- Users replacing a factory front sight gas block with a low-profile setup.
- Shooters wanting a streamlined gas block for a cleaner rifle profile.
- Builders using .750-inch O.D. barrels and the black Mk12 configuration.
- Those assembling a Mk12 Mod 1 or Mk18 Mod 1 style rifle.
Specifications
| Alternate Version | Mk 12 Style fits .875 in O.D. barrels with natural silver finish |
|---|---|
| Blade Finish | Black oxide finish |
| Color | Black |
| Compatibility Notes | Provides maximum clearance for optics or free-float handguards; low-profile replacement for factory front sight gas block |
| Fits Barrel O D | .750 in |
| Height | 1-7/16 in |
| Included Accessories | Set screws, gas tube mounting pin, installation instructions |
| Length | 1 in |
| Material | 416 stainless steel |
| Style | Mk 12 |
| Width | 7/8 in |
Pros
- Low-profile replacement for factory front sight gas block
- Provides maximum clearance for optics and free-float handguards
- Streamlined profile reduces forward weight
- Includes set screws, gas tube mounting pin, and installation instructions
- Fits .750-inch O.D. barrels
- Made from 416 stainless steel with black oxide finish
Considerations & Trade-offs
- Requires a .750" O.D. barrel, so it is not a universal fit for other barrel diameters.
- Designed as a low-profile replacement gas block, so it is intended for setups using optics or free-float handguards rather than factory front sight configurations.
- Installation hardware and instructions are included, but the product still requires proper installation and alignment for use.
- The black oxide finish is functional and subdued, but it is not the same appearance as a natural stainless finish.
Suggested Comparisons
- AR-15 gas blocks
- Low-profile gas blocks
- Free-float handguard compatible rifle parts
- AR-15 rifle accessories
Suggested Accessories
- AR-15 handguard
- Optic mount
- Gas tube
- Installation tools
Frequently Asked Questions
What barrel diameter does this Mk12 gas block fit?
The listed Mk 12 version fits barrels with a .750" O.D. The product data also notes a Mk 12 Style version for .875" O.D. barrels, but the title here is the .750 steel black model.
Is this a low-profile gas block for use with free-float handguards?
Yes. The description says it is a slim, low-profile replacement for the factory front sight gas block and provides maximum clearance for optics or free-float handguards.
What comes included with the gas block?
Set screws, a gas tube mounting pin, and installation instructions are included.
What material and finish are listed for this gas block?
The long description and specs list 416 stainless steel with a tough, wear-resistant black oxide finish.
Is this an exact Mk12 Mod 1 style part?
The description says the Mk 12 is an exact copy of the gas manifold on the Mk12 Mod 1 and Mk 18 Mod 1 Special Purpose Rifles used by the U.S. Army and Navy.