Here ya go!!!!
https://www.primaryarms.com/KNS_Hammer_and_Trigger_Pin_Non_Rotating_AR15_p/nrthp-154.htm
They have others on sale too.
https://www.primaryarms.com/KNS_Hammer_and_Trigger_Pin_Non_Rotating_AR15_p/nrthp-154.htm
They have others on sale too.