Battle Arms provides the EKG AK Trigger Kit as an economical way to improve your AK pattern rifle. Features: Maximum compatibility with most standard production AK patterned firearms. Enhanced hammer geometry to eliminate that ""hump"" feel when charging the AK, to give you that smooth custom feel. Thru-harden steel (no softcore) HRC 42-45. Due to proper heat treat, this minimizes internal wear or mushrooming the back of the carrier from over hardened hammers. Two raised dimples on the back to allow for an easy index of hammer spring. Made in the USA for 922r compliance 3 Pieces (Hammer, Trigger, Disconnector). Comfortabl Mfg: Battle Arms Development Inc.