It has two Skeleton section, the first is Heavy Duty structure for Withstand Gas Impact and the second is more bigger Skeleton.
DB TAC Low Concussion Muzzle Brake Compensator 4.5 Inch Extra Long
Best Muzzle Brakes and Compensators - DB TAC
Hard Al 7075 T6 Low Concussion Muzzle Brake Compensator 12x28 TPI
LCXS UL Low Concussion Linear Muzzle Brake Compensator Ultra
DB TAC Muzzle Brake Red Aluminum Skeleton Muzzle Brake Compensator
LCXS UL Low Concussion Linear Muzzle Brake Compensator Ultra LIght
Knight's Armament QDC Mams Muzzle Brake Kit
Hard Al 7075 T6 Low Concussion Muzzle Brake Compensator 12x28 TPI
Muzzle Brakes - Shop
Hard Al 7075 T6 Low Concussion Muzzle Brake Compensator 12x28 TPI
Muzzle Brakes - Shop
Compact Skeleton Low Concussion Muzzle Brake Compensator 1/2x28
New 5/8''X24 TPI Short Compact Low Concussion Muzzle Break for