Total rounds would be fewer than twenty.
The first twelve went off fine, then I could not get the mag to strip off the first rnd from the mag.
This second range experience lasted, I think, about seven rnds and the jam happened as the last rnd was ejected. I can see the take-down link pin- barely- but I am not into doing what someone will have to do to move that slide.
Between the first shooting and the second, I had taken the gun apart, cleaned it, and reassembled it (making sure the 'unfinished' end of the spring went into the little recoil spring retainer). For lube, I used Super Lube applied with a small paint brush as per instructions on this BBS.
I am perplexed.