Unfortunately, no. The welds represent the conversion from full auto to no status. The C2A1 was one of very few that were sold to qualified DCRA shooters, and upon the owners death, the estate put it up for sale. After a month on consignment sale at a dealers, then a while on the exch forum. I bought it. I had it transferred to a local dealer, then had it deactivated.
I hated to do it, but I really didn't see another option. Since guns like these are relegated to be safequeens now, and at least this way,these can be openly displayed.
The C1A1 was one of the OPP ones that went through Collector's source years ago. I actually owned it once before, and sold it.
I got it for a bit less than the price Cantom quoted.
The two are sitting side by each in my study as we speak. Both are very minty, albeit nuetered.