AK/AKM 5.45x39mm Muzzle Brake "Bulldog". By GPN. 
 
PURPOSE AND APPLICATION:
Bulldog 5.45 muzzle brake designed for efficient redirection of propellant gases during firing. Installs on the muzzle thread and reduces recoil and muzzle rise, and improves weapon control.
 
Compatible with AK platform rifles in 5.45, including:
AK/AKM
Saiga MK
MKM-072SB
MKM-072Sn and other models with corresponding thread.
 
DESIGN AND FEATURES:
Manufactured from steel using precision turning and milling for durability and long service life
Design includes:
Extended internal channel optimized for 5.45 platforms (MKM / AK series)
Port and channel system for efficient gas redirection
Guide slots and vent ports for adjustable gas release.
 
Package Contents
Bulldog Muzzle Brake 5.45
Five M3 screws for gas flow adjustment
Torx 10 wrench for adjusting screws
 
FUNCTIONAL ADVANTAGES:
Reduced recoil and muzzle rise
Improved stability during rapid fire
Enhanced shot consistency and repeatability
Adjustable gas flow configuration
Durable steel construction with extended service life.
 
FINISH:
Cerakote. Provides corrosion protection, improved wear resistance, and a durable matte surface.
 
COMPATIBILITY AND INSTALLATION
Compatible with 5.45 rifles featuring M24×1.5 muzzle thread
Installs by threading onto the muzzle and aligning using a centering clamp
Installation should follow firearm manufacturer guidelines to ensure proper bore alignment and safe operation.