[Guest]

Since I am new to AR's I have some questions, as stupid as they are, please dont beat me up too bad.

In the picture below, what is that lever just above the trigger? I have seen this on some rifles but not others.

 

[Guest]

Anti-roll pins

http://www.xdtalk.com/forums/showthread.php?t=58722&highlight=anti+roll

 

[Guest]

thanks

 

[Guest]

KNS Gen 2 anti rotation/walk pins

 

[Guest]

That's a Mega Machine Shop lower in the picture. A somewhat local manufacturer, at least in the same state, and they have a fine reputation, except for a small run that was machined out of spec, but they replaced everyone that was screwed up free of charge.
http://www.commtechreview.net/firearms/megalwr.htm