SIG Sauer M-LOK 13" M400 Tread Free Float Handguard, Black - HGRDTRDE13MLOKBLK
Click to see full view
Sig Sauer
Overview
The Sig Sauer M-LOK 13" M400 Tread Free Float Handguard is designed specifically for AR-15 platforms, offering a sleek black finish and a 13-inch length that provides ample real estate for accessories while maintaining a lightweight profile. Its free-float construction enhances accuracy by isolating the handguard from the barrel, allowing for improved precision during shooting. This handguard features an M-LOK mounting interface, making it compatible with a wide range of attachments for customization. It's commonly used in builds that utilize a mid-length gas system and are chambered in 5.56 NATO, making it a solid choice for a variety of tactical applications.
Specifications
SIG Sauer M-LOK 13" M400 Tread Free Float Handguard, Black - HGRDTRDE13MLOKBLK
Available Merchants(7)
Prices checked
Price Alert
Build history on GunPartPicker
Builders have added the SIG Sauer M-LOK 13" M400 Tread Free Float Handguard, Black - HGRDTRDE13MLOKBLK to their builds on GunPartPicker. Since April 2026, it ranks #147 of the 885 handguards builders have added.
It was out of stock everywhere we track every time we checked in October 2026, and today only Optics Planet has it in stock. Buying today, the lowest price is $129.99 at Optics Planet.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
Not sure which handguard to pick?
We ranked every handguard by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Handguard Trends →Check it against the live catalog:
Frequently Built With
The part most often added in each category by the builds that include this one
Bravo Company Mfg Upper Receiver Assembly w/ Laser T-Markings, Hard Coated Anodized - 4-UR-M4
Rosco Manufacturing Bloodline 5.56 AR-15 Barrel M4 Carbine - 14.5"
Rise Armament RA-212 Extended-Latch Charging Handle - FDE
Bravo Company M16 Bolt Carrier Group Black
Wilson Combat AR-15 Lo-Profile Gas Block .750" Black
PSA Custom AR Trigger Single-Stage Flat Drop-In Match Grade - 116055
Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
PlatformBased on real build data showing which platform (AR-15, AR-10, AR-9) builders pair with this product.
CaliberBased on real build data showing which calibers builders choose alongside this product.
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
Builds Featuring This Part
See all builds →Builds in the community that include the Sig Sauer M-LOK 13" M400 Tread Free Float Handguard, Black - HGRDTRDE13MLOKBLK
| Build | Parts | Total |
|---|---|---|
 | 22 | $1309.64 |
No reviews yet. Be the first to review this product!