Sig Sauer TREAD M-LOK Sight Rail Black AR-15
Sig Sauer
$28.69
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Sig Sauer
Sig Sauer TREAD M-LOK Sight Rail Black AR-15
The Sig Sauer Tread Sight Rail M-LOK is a factory-original 4-slot Picatinny rail section designed to mount directly into the M-LOK interface of the M400 Tread rifle, giving you a solid, low-profile platform for attaching front sights, lights, lasers, or other accessories.
- Factory Sig Sauer component engineered specifically for the M400 Tread rifle
- 4-slot Picatinny rail section accepts a wide range of standard accessories
- M-LOK mounting interface ensures a secure, rock-solid attachment
- Matte black finish matches the M400 Tread's factory aesthetics seamlessly
- Versatile design allows use beyond front sight duty on compatible handguards
- Lightweight aluminum construction adds minimal weight to your build
Who This Is For
This rail is ideal for M400 Tread owners looking to restore or upgrade their factory front sight setup, or for any shooter running an M-LOK handguard who needs a reliable, brand-name Picatinny rail section for mounting optics accessories, a flip-up front sight, a tactical light, or a foregrip. It's a straightforward, no-compromise solution for anyone who wants genuine Sig Sauer quality on their rifle.
Specifications
| Brand | Sig Sauer |
|---|---|
| Model | Tread Sight Rail |
| Part Number | RPLSGKIT-TRD-SIGHT-RAIL |
| Mounting System | M-LOK |
| Rail Standard | Picatinny (MIL-STD-1913) |
| Number of Slots | 4 |
| Finish | Matte Black |
| Material | Aluminum |
| Compatible Platform | Sig Sauer M400 Tread |
| Primary Use | Front Sight Rail / Accessory Mounting |
Frequently Asked Questions
Will this M-LOK rail work on handguards other than the M400 Tread?
Yes. While this rail was designed as the factory front sight rail for the Sig Sauer M400 Tread, it uses the standard M-LOK mounting interface, which means it is compatible with any M-LOK-compatible handguard or chassis. Just verify that the rail's slot count and length suit your intended mounting position.
What accessories can I mount on this 4-slot Picatinny rail?
The 4-slot Picatinny section is compatible with any standard MIL-STD-1913 Picatinny-mount accessory, including flip-up front sights, low-profile gas blocks with integrated rails, tactical flashlights, laser aiming modules, and certain foregrip adapters. The 4-slot length is well-suited for compact accessories like a front sight post or a small weaponlight.
Is this a genuine OEM Sig Sauer part, and does it come with mounting hardware?
Yes, this is an authentic, factory-original Sig Sauer replacement component — not an aftermarket copy — ensuring proper fitment and finish matching your M400 Tread. Mounting hardware (M-LOK T-nuts and screws) is typically included; however, we recommend confirming hardware is present upon receipt and consulting the Sig Sauer M400 Tread owner's manual for torque specifications.
