NOT KNOWN DETAILS ABOUT FRT TRIGGER

I had to put a lighter spring in my comprehensive sized M16 A2 clone nonetheless it ran wonderful. Tried once more Using the eleven.five" Comando Colt upper. No dice. Ran five hundred rounds of wolf as a result of it today. Didnt damage the spring in the least.I dont know how the trigger would be outrunning the provider. I indicate thats the whole