The SI VENOM FH nearly eliminates 100% of your muzzle flash and quickly disperses the burning gases exploding from the barrel. This flash hider will significantly reduces muzzle flash to help preserve your night vision. No loss of low light/night vision means the potential to make faster follow up shots, as well as increased situational awareness. The four prongs on the end of the brake are designed to protect the muzzle crown and gives this flash hider a one of a kind custom look! The SI VENOM FH requires no modifications to the rifle for installation. Recommended torque is 15-20 ft-lbs.