AAC MK13-SD MB 90T Muzzle Brake – 5/8x28 Thread Pitch

The AAC MK13-SD MB 90T muzzle brake serves as a quick-detach mounting platform for compatible AAC suppressors while providing effective recoil reduction when used standalone. This brake features a 90-tooth ratchet design that ensures consistent, repeatable mounting with minimal point-of-impact shift between suppressed and unsuppressed configurations.

The 5/8x24 thread pitch is standard for most .308/7.62mm rifles. Constructed from heat-treated steel with a matte black finish, the MK13-SD brake installs with standard armorer's tools and requires proper torque for secure mounting. This device is designed to mate with AAC 51T and 90T suppressor mount systems—verify compatibility with your specific suppressor model before purchase.

• Type: Muzzle Brake / Suppressor Mount
• Thread Pitch: 5/8x28
• Mount System: 90-Tooth Ratchet
• Material: Heat-Treated Steel
• Finish: Matte Black
• Compatible Firearms: .223/5.56mm rifles with 5/8x28 threaded barrels