[RandallFlagg]

I ALMOST bought the Geissele for this, but thought that I should go with the low end first just to get the hang of it. Wouldn’t want to spoil myself right at the start of this adventure. I can always upgrade as needed.

What size vice should I get for the upper build?

[davetex]

Something like this will work fine.

http://www.harborfreight.com/5-inch-multi-purpose-vise-67415.html

[Carriage Hill]

I bought/installed 2 Geisselle units on my NFA/Class III AR-15s & AR-10s:

http://geissele.com/super-semi-automatic-enhanced-ssa-e-trigger.html

&

http://geissele.com/super-3-gun-s3g-trigger.html

Just for shits & giggles.