Re: qusetion about trigger pins.
JP enterprises makes a set that do not utilize the external bar. They do however need blue lock tite on the screws or they will untwist themselves and fall off. I used to use them but when I switched to the SSA they became obsolete.
I like the way the anti walk pins tightened up the trigger group and when coupled with an extra power hammer spring they made for a decent "stock trigger".
Excuse the rant.