Revolutionary design allows shooter to achieve rates of fire with greater ease and control than other products on the market. - Operation is completely intuitive stroke the trigger with your two fingers to achieve an increased rate of fire no need for unnatural pushing or pulling. - Can be installed in minutes on an unloaded Century AK. - Note: If unfamiliar with assembling and disassembling you should have installation done by a qualified gunsmith. - 100% American designed and made. - Requires permanent modification of triggerguard. - Installation instructions included. Read and understand them thoroughly or contact a qualified gunsmith.