Timney Triggers AK-47, Single Stage Trigger, Curved Trigger Shoe, Anodized Finish, Red AK47 Timney's engineers worked tirelessly to design a trigger that fits in as many variants as possible by engineering three key features that set this trigger apart. The AK Drop-In is exactly as the name states: a complete" 100 percent drop-in" cassette style unit. The triggerfeatures an adjustable screw to match existing rifle's safety levers" allowing the trigger to fit multiple variants. Finally" it's secured in the housing using four set screws that mechanically bind the trigger to the receiver" similar to their AR offerings.