FEATURES:

• Built out of 17-4 stainless steel
• Lightweight effective design
• 3 Ports
• Self-timing Brake
• Easy to mount
• Weight: 1.6-2.9 Oz
• Ports designed to keep muzzle jump down
• .22 blank is built with a .22 caliber pilot hole and meant to be bored out by a gun smith to a specific caliber.
• .223 caliber good for any caliber up to and including .223
• 6.5 mm caliber good for any caliber up to and including 6.5 mm
• .30 caliber good for any caliber up to and including .308
• LOCK NUT IS A LEFT HANDED THREAD! Muzzle brakes have right handed internal threads. When possible some form of thread anti-seize is recommended on lock nut threads.