Knight's Armament 5.56/.223 M4QD MAMS Muzzle Brake - 1/2x28

Name: Knight's Armament 5.56/.223 M4QD MAMS Muzzle Brake - 1/2x28
Brand: Knights Armament

Knights Armament · Muzzle Devices

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Best price

$201.56at AR15Discounts

checked Nov 10, 2026

Buy at AR15Discounts

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Where to buy

Store	Price	Availability	Buy	Add to build
AR15Discounts Best price	$201.56checked Nov 10, 2026	Check store	Buy at AR15Discounts
Dirty Bird	$224.59checked Nov 10, 2026	Check store	Buy at Dirty Bird

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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Dashed line = out of stock. Tracking since Oct 28, 2026.

Show the prices as a table

Store	Latest	Lowest	Highest
AR15Discounts	$201.56	$201.56	$201.56
Dirty Bird	$224.59	$224.59	$224.59

Since Oct 28, 2026.

About this part

The Knight's Armament 5.56/.223 M4QD MAMS Muzzle Brake - 1/2x28 is a muzzle brake from Knights Armament. It's sold by 2 stores, from $201.56 to $224.59.

Fits and works with

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

Specifications

Manufacturer: Knights Armament
Type: Muzzle Brake
Caliber: 5.56 mm NATO
Thread pattern: ½ x 28

From the manufacturer

The KAC 5.56 MAMS (Multi-Axis Muzzle Stability) Brake has been engineered to increase controllability, to significantly reduce felt recoil, and to help mitigate a rifle's flash signature as compared to traditional muzzle brake designs. The MAMS is a neutral bias brake that combats both muzzle rise and drift upon firing. Depending on the gun's barrel length, it can reduce felt recoil in a 5.56 x 45mm gun by as much as 67 percent. The 5.56 M4QD NT-4 MAMS is compatible with KAC's QDSS-NT4 5.56mm sound suppressor, and comes complete with a 7-piece shim kit and installation instructions. Specifications: Weight: 2.3oz (65g) Length: 1.88 (46mm) Thread Size: 1/2 x 28 Suppressor Compatibility: KAC 5.56 QDSS-NT4