M400 Tread M-LOK Picatinny Rail

Name: M400 Tread M-LOK Picatinny Rail
Brand: Sig Sauer
Availability: InStock

Sig Sauer · Rails & Handguards

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Best price

$23.67at Kentucky Gun Co

In stock Lowest in 30 dayschecked Nov 14, 2026

Buy at Kentucky Gun Co

Compare 10 stores

Specifications

Manufacturer: Sig Sauer

Compatibility

Platform: AR-15

Materials and features

Attachment: M-LOK, Picatinny
Color: Black

Where to buy

Store	Price	Availability	Buy
Kentucky Gun Co Best price	$23.67checked Nov 14, 2026	In stock	Buy at Kentucky Gun Co
Ammunition Depot	$25.49checked Nov 14, 2026	In stock	Buy at Ammunition Depot
GunMag Warehouse	$28.99checked Nov 14, 2026	In stock	Buy at GunMag Warehouse
MidwayUSA	$31.99checked Nov 14, 2026	In stock	Buy at MidwayUSA
OpticsPlanet	$37.89Salechecked Nov 14, 2026	In stock	Buy at OpticsPlanet
Battlehawk Armory	$22.58Salechecked Nov 14, 2026	Check store	Buy at Battlehawk Armory
Classic Firearms	$25.30checked Nov 14, 2026	Check store	Buy at Classic Firearms
Palmetto State Armory	$26.29checked Nov 14, 2026	Check store	Buy at Palmetto State Armory
GrabAGun	$26.59Salechecked Nov 14, 2026	Check store	Buy at GrabAGun
Brownells 17.76% off · ends Nov 15 · exclusions apply	$25.99checked Nov 14, 2026	Out of stock	Buy at Brownells

Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.

Price history

Show

Lowest in-stock price in the last 30 days: $23.67 at Kentucky Gun Co. Dashed line = out of stock. Tracking since Sep 28, 2026.

Show the prices as a table

Store	Latest	Lowest	Highest
Ammunition Depot	$25.49	$24.49	$25.49
Battlehawk Armory	$22.58	$21.35	$22.58
Brownells	$25.99	$25.99	$25.99
Classic Firearms	$25.30	$25.30	$25.30
GrabAGun	$26.59	$26.59	$26.59
GunMag Warehouse	$28.99	$28.99	$28.99
Kentucky Gun Co	$23.67	$23.67	$24.15
MidwayUSA	$31.99	$29.99	$31.99
OpticsPlanet	$37.89	$36.89	$38.49
Palmetto State Armory	$26.29	$25.29	$27.99

Since Sep 28, 2026.

About this part

The M400 Tread M-LOK Picatinny Rail is an AR-15 handguard from Sig Sauer. It's sold by 10 stores (5 in stock), from $22.58 to $37.89. The lowest in-stock price in the last 30 days was $23.67 at Kentucky Gun Co.