The Knights Armament 5.56mm QDC Open Brake XC Kit 1/2-28 For KAC QDC is a purpose-built muzzle brake designed to serve as both a recoil-reducing device and a secure mounting interface for KAC 5.56mm QDC suppressors. Machined from durable Inconel with a matte black finish, its open brake design and large side ports help redirect gases to control muzzle rise while also acting as a sacrificial baffle to reduce wear on the suppressor’s first baffle and extend service life.

This model is ideal for shooters who want improved control on 5.56x45 NATO and .223/5.56 platforms while remaining ready for future suppressor use. The included shim kit allows precise timing on 1/2x28 threaded barrels, making it well suited for range use, training, and competition where fast follow-up shots and consistent performance matter. The thoughtful engineering reflects Knights Armament’s reputation for meticulous craftsmanship and innovation in modern firearm accessories.

Key Features:

• Manufacturer: Knights Armament
• Model: 5.56mm QDC Open Brake XC Kit 1/2-28 For KAC QDC
• Caliber: 5.56mm (.223/5.56)
• Cartridge: 5.56x45 NATO
• Color: Black
• Finish: Matte
• Material: Inconel
• Muzzle Threads: 1/2x28
• Length: 2.15"
• Weight: 3.5 oz
• Quantity: 1
• Muzzle Device Type: Open Brake