Griffin Armament DUAL-LOK MINIMALIST STEALTH FLASH SUPPRESSOR - .30 CALIBER 735B0845 GFN. The DUAL-LOK system is comprised from two parts the DUAL-LOK HUB Mount and the DUAL-LOK muzzle device (of your choice). The muzzle device integrates 60 machined mounting position splines which is doubled by the mount's two locking positions hence the double entendre DUAL-LOK . The mounts' two locking positions are machined out of phase of one another by 3 degrees which provides the 120 locking positions and ensures a tightly mounted and locked suppressor. When the suppressor is installed only one of the two positions will function by allowing the spring to push the locking collar rearward over the splines. Constructed of 17-4 PH stainless steel the DUAL-LOK Minimalist Stealth Flash Suppressor has 3 flash suppressing tines which have anti-reasonance features integrated. The Minimalist Stealth Flash Suppressor weighs 2.4 ounces substantially lighter than that of most competing flash suppressor mounts. The lighter weight reduces suppressor system weight while making the host firearm barrel lighter and more responsive to the shooter. The flash suppressor does not require timing. Features of Griffin Armament DUAL-LOK MINIMALIST STEALTH FLASH SUPPRESSOR - .30 CALIBER 5/8X24: Utility Patent Pending Wear Free Mounting System 120 Effective Positions 17-4 PH Stainless Steel Nitrided Black No Timing or Shims Required Package Contents: Griffin Armament DUAL-LOK MINIMALIST STEALTH FLASH SUPPRESSOR - .30 CALIBER 5/8X24 DUAL-LOK the newest QD mounting system for rifle suppressors. The DUAL-LOK system is comprised from two parts the DUAL-LOK HUB Mount and the DUAL-LOK muzzle device (of your choice). The muzzle device integrates 60 machined mounting position splines which is doubled by the mount's two locking positions hence the double entendre DUAL-LOK. The mounts' two locking positions are machined out of phase of one another by 3 degrees which provides the 120 locking positions and ensures a tightly mounted and locked suppressor. When the suppressor is installed only one of the two positions will function by allowing the spring to push the locking collar rearward over the splines. Constructed of 17-4 PH stainless steel the DUAL-LOK Minimalist Stealth Flash Suppressor has 3 flash suppressing tines which have anti-reasonance features integrated. The Minimalist Stealth Flash Suppressor weighs 2.4 ounces substantially lighter than that of most competing flash suppressor mounts. The lighter weight reduces suppressor system weight while making the host firearm barrel lighter and more responsive to the shooter. The flash suppressor does not require timing. GFNDLFH5824