Breek-LOK 3QD Compatible Muzzle Devices The Breek-LOK 3QD QD Suppressor Attachment system delivers unrivaled quick-detach functionality, offering both speed and simplicity. Its streamlined profile integrates seamlessly with any firearm, enhancing aesthetics and performance. Designed to reduce recoil and muzzle rise, the Breek-LOK 3QD Gemini Dual-Port Muzzle Brake enables rapid, accurate follow-up shots. Its 90Adeg blast-vectoring ports minimize blowback for heightened shooter comfort. Sleek and robust, it maintains a clean appearance and excels in competitive or defensive applications. Breek-LOK 3QD Compatible Design: Gemini Material: 4140 Hardened, Nitride Overall length: 2.25 Inches Weight: 2.1 oz (223/556) 1.9 oz (30 cal) Torque Spec: 20-30 ft lbs Peel Washer Included Designed & Manufactured in America To install: A 7/8" (22mm) wrench can grab onto the lugs in a pinch; otherwise, use the install tool provided with each HUB.