I loaned my upper vise block to my son a while back. He is in Virginia and I am in Florida. Rather than him shipping it, or buying another one, I am thinking about making my own.
This is my concept; router out a ½” by ½” slot down the length of a 7”-8” long piece of 2” x 4” (1-1/2” x 3-1/2” ) . The takedown lugs would fit into the slot. Then I could clamp it in a vise with another piece of 2” x 4” on the top Picatinny rail.
Anybody else tried anything like this, or sees any risk? This is a quick cross-section sketch:
I am changing out a handguard, so I need to swap the barrel nut. Since the barrel is already seated, I am thinking of leaving the BCG and Charging Handle in the upper to possibly provide some structural support. Comments?
So, to complete this thread, the routered 2 x 4 holding fixture worked out! It would have been nice to have a third hand holding both boards and the upper in place while snugging up the vise, but I persevered:
