Help with a inexpensive build for hunting pigs

[yotesniper66]

To add suggestions on what grayfox said about triggers, I'd recommend the Larue MBT.  Excellent trigger for $80 and if you're not familiar with how to install, just Google it.  Another trigger would be Rock River Varmint or National Match.  I have multiples of both an like them.

You could also go with a "cassette" type drop-in which is the easiest to install, but a little more $.