M400 Tread 5.56mm Compensator, 1/2x28mm

Name: M400 Tread 5.56mm Compensator, 1/2x28mm
Brand: Sig Sauer
Availability: InStock

Sig Sauer · Muzzle Devices

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Best price

$81.99at MidwayUSA

In stock checked Nov 10, 2026

Buy at MidwayUSA

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Where to buy

Store	Price	Availability	Buy
MidwayUSA Best price	$81.99checked Nov 10, 2026	In stock	Buy at MidwayUSA
Classic Firearms	$69.88checked Nov 10, 2026	Check store	Buy at Classic Firearms
AR15Discounts	$79.99checked Nov 10, 2026	Check store	Buy at AR15Discounts
Dirty Bird	$79.99checked Nov 10, 2026	Check store	Buy at Dirty Bird
Kentucky Gun Co	$67.99checked Nov 10, 2026	Out of stock	Buy at Kentucky Gun Co
Brownells	$69.99checked Nov 10, 2026	Out of stock	Buy at Brownells
OpticsPlanet	$78.79Salechecked Nov 10, 2026	Out of stock	Buy at OpticsPlanet

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

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Lowest in-stock price in the last 30 days: $78.99 at MidwayUSA. Dashed line = out of stock. Tracking since Sep 28, 2026.

Show the prices as a table

Store	Latest	Lowest	Highest
AR15Discounts	$79.99	$79.99	$79.99
Brownells	$69.99	$69.99	$69.99
Classic Firearms	$69.88	$69.88	$69.88
Dirty Bird	$79.99	$79.99	$79.99
Kentucky Gun Co	$67.99	$67.99	$67.99
MidwayUSA	$81.99	$78.99	$81.99
OpticsPlanet	$78.79	$78.79	$78.79

Since Sep 28, 2026.

About this part

The M400 Tread 5.56mm Compensator, 1/2x28mm is a compensator from Sig Sauer. It's sold by 7 stores (1 in stock), from $67.99 to $81.99. The lowest in-stock price in the last 30 days was $78.99 at MidwayUSA.

Fits and works with

Caliber: 5.56 / .223 · Shop matching ammo
Muzzle thread: 1/2x28 · Muzzle devices

Specifications

Manufacturer: Sig Sauer
Type: Compensator
Caliber: 5.56 mm NATO
Thread pattern: ½ x 28

From the manufacturer

3-chambered compensator manufactured specifically for the M400 TREAD to reduce recoil and muzzle rise with a 1/2 x 28 thread pitch. Mfg: Sig Sauer, Inc.