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Low Profile Gas Block M400
$59.99
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SKU: GASBLOCK-LOWPRO-M400
Overview
Designed as a factory replacement low profile gas block for the M400, this part is intended for owners maintaining or restoring compatible SIG SAUER rifles. It is suited to users who need an original replacement component rather than an aftermarket substitute. Installation requires disassembly beyond a field-stripped condition, so it is not a casual drop-in part. SIG SAUER specifies that only certified armorers install these parts kits, and the kit is intended to be used as a complete unit without substituting included parts.
Why Hunters Choose the Sig Sauer
Factory Replacement
Part for the SIG SAUER
Low Profile
Gas block design supports a
Intended Installation
As a complete factory parts
Specifically Identified
For M400 compatibility
Backed Sig
SAUER’s warning for certified armorer
Key Features
- Factory replacement low profile gas block for the M400
- Designed for use as part of the M400 platform
- Installation requires disassembly beyond a field-stripped condition
- SIG SAUER requires certified armorers for installation
- Parts kits are intended to be installed as a full unit
- Substituting included parts may cause incompatibility or malfunction
Best Used For
- Factory replacement use on SIG SAUER M400 rifles needing a low profile gas block
- Certified SIG SAUER armorers handling parts-kit installation beyond field-stripped disassembly
- Owners replacing a factory component as part of a full-unit installation
- Users who need a direct-fit service part rather than a general-purpose accessory
Specifications
| Authorized Installer Requirement | Only certified SIG SAUER armorers should install these parts kits |
|---|---|
| Compatibility | M400 |
| Description | Factory replacement low profile gas block for the M400 |
| Installation Notes | Installation requires disassembly beyond a field-stripped condition |
| Parts Kit Note | Intended to be installed as a full unit; substitution of included parts may be incompatible and may lead to malfunction, serious injury, or death |
| Product Type | Gas Block |
| Safety Warning | Improper installation may result in malfunction, serious injury, or death |
| Warranty Note | Damage caused by incorrect installation is not covered by the firearm's warranty |
Pros
- Factory replacement part for the SIG SAUER M400 platform
- Low profile gas block design supports a compact setup
- Intended for installation as a complete factory parts kit
- Specifically identified for M400 compatibility
- Backed by SIG SAUER’s warning for certified armorer installation
Considerations & Trade-offs
- Factory replacement part for the M400, so fitment is specific rather than broadly universal.
- Installation requires disassembly beyond a field-stripped condition, which is more involved than a basic parts swap.
- SIG SAUER states these parts kits should be installed only by certified SIG SAUER armorers, limiting do-it-yourself use.
- The kit is intended to be installed as a full unit; substituting included parts may create compatibility issues and risk malfunction.
Suggested Comparisons
- AR-15 gas blocks
- AR-15 replacement parts
- AR-15 upper receiver components
- Firearm maintenance and repair parts
Suggested Accessories
- Gas block
- Armorer's tools
- Firearm cleaning kit
- Replacement small parts kit
Frequently Asked Questions
What firearm is this gas block made for?
It is listed as a factory replacement low profile gas block for the M400.
Is this intended as a direct replacement part?
Yes. The product is described as a factory replacement low profile gas block for the M400.
Can this be installed with a basic field-stripped firearm?
No. The product information states that installation requires disassembly beyond a field-stripped condition.
Who should install this part?
SIG SAUER requires that only certified SIG SAUER armorers install these parts kits.
Are there any warnings about mixing parts or improper installation?
Yes. The listing warns that these parts kits are intended to be installed as a full unit, and that substituting included parts may be incompatible and may lead to malfunction, serious injury, or death.