Lower vise block (AR-15) loan

[Mark L]

Hi Folks,
I'm closing in on completing my build, just have to tighten the castle nut and barrel nut, then the rest of the assembly is very quick. I was able to find a reasonably priced upper vise block, but don't want to spend $50 on something I'll use once. Anyone within reasonable distance (15 miles) to Groton willing to loan me theirs for some upcoming weekend?
Thanks,
Mark

 

[LoginName]

If it's just to tighten down the castle nut, you really don't need a lower vise block.
Just using a block of wood will do.