5.56mm Qdc Open Brake XC Kit 1/2-28 For Kac Qdc

Name: 5.56mm Qdc Open Brake XC Kit 1/2-28 For Kac Qdc
Brand: Knights Armament

Knights Armament · Muzzle Devices

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5.56mm Qdc Open Brake XC Kit 1/2-28 For Kac Qdc

Best price

$142.27at AR15Discounts

checked Nov 14, 2026

Buy at AR15Discounts

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Fits and works with

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

Specifications

Manufacturer: Knights Armament

Compatibility

Muzzle thread: ½ x 28
Caliber: 5.56 mm NATO

Materials and features

Type: Muzzle Brake

Where to buy

Store	Price	Availability	Buy
AR15Discounts Best price 5% off	$142.27checked Nov 14, 2026	Check store	Buy at AR15Discounts
Dirty Bird	$142.27checked Nov 14, 2026	Check store	Buy at Dirty Bird
Brownells 17.76% off · ends Nov 15 · exclusions apply	$142.27checked 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

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

Show the prices as a table

Store	Latest	Lowest	Highest
AR15Discounts	$142.27	$142.27	$142.27
Brownells	$142.27	$142.27	$142.27
Dirty Bird	$142.27	$142.27	$142.27

Since Sep 28, 2026.

About this part

The 5.56mm Qdc Open Brake XC Kit 1/2-28 For Kac Qdc is a muzzle brake from Knights Armament. It's sold by 3 stores, all at $142.27.

From the manufacturer

KNIGHT'S ARMAMENT 5.56MM QDC OPEN BRAKE XC KIT FOR KAC QDC Mounting interface for KAC 5.56mm QDC suppressors to reduce wear to the first baffle and extend service life. Without a suppressor mounted, the 5.56mm Open Brake reduces felt recoil and muzzle lift. SPECS Thread: 1/2-28 Weight: 3.5 oz Length: 2.15" Addition to Bare Muzzle: 1.69" Mfg: Knights Armament