The Griffin Armament DUAL-LOK system is comprised from two parts, the DUAL-LOK Mount and the DUAL-LOK muzzle device (of your choice). This is the DUAL-LOK FlashComp, a combination compensator and flash-hiding muzzle device. The muzzle device integrates 60 machined mounting position locking grooves, 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 effective locking positions and ensures a tightly mounted and locked suppressor. When the suppressor is installed, only one of the two positions will generally function by allowing the spring to push the locking collar rearward over the splines. The DUAL-LOK FlashComp incorporates vast R&D resources from years of testing recoil-compensating and flash-hiding design geometry. The DUAL-LOK FlashComp behaves as both a compensator to mitigate recoil, and a flash-hider with its three...