I have a Bersa BP9CC that has a short/mild blowback cycle. It does have a good shot count (I get through many Mags).
It does not load the BB in the way that the KWC 1911 does (automatically by the slide coming forward). Initial movement of the trigger loads the bb, further movements operated the hammer/gas valve.
The real BP9CC has a short reset on the trigger, it seems that the bbs does too; it can double feed a bb if you dwell on the trigger - it works fine if you just get on and shoot! The pistol is very slim and compact which sets it apart from most other blow back pistols.
Treat Others As You Would Wish To Be Treated.