yosuthnmasa...........
Yes, I used Plinker's Jig for the whole thing. Using a buck from Plinker's Jig, I placed the pre-formed rivet head into the buck. With the rivet pushed through the rear trunnion, I slowly hammered on the unformed (straight) part of the rivet. Once it started to flaten evenly, I put it into Plinker's Jig using adapter "A" and the shallow cupped setscrew and crushed it with the 20 ton press. It took no effort at all.
One thing I did was to dimple both LH and RH rear receiver holes. I think next time I might just dimple the holes that the swell neck rivet head goes into.
Only things left for this receiver is install the lower rails (which I would have done today but we had a 5 hour power outage), install the center support, and last, install the triggerguard, maybe 25 minutes total at the most.