Battle Arms Development Enhanced AK Trigger, Fits AK, Black BAD-EKG The Battle Arms Development EKG AK Trigger Kit is the perfect trigger to put in your AK rifle. This battle-ready trigger will ensure a clean crisp break" zero trigger slap" and a short" smooth" and positive reset. This trigger kit comes complete with a hammer" trigger" disconnector" disconnector spring" and axis pin sleeve. Battle Arms Development" Inc. (B.A.D. Inc.) is a design" research" and development firm incorporated in 2009 with a focus on small arms design including firearm components" tools" gauges" accessories" and complete weapon systems.