The new release of the scorpion pistol with the carbine handguard was just a way for them to flush out their s1 parts inventory. Apparently the carbines were easier to sell in foreign countries with so many firearms restrictions thus a surplus of carbine handguards. Certain molded parts of the evo are made in batches outside of the factory. The factory has 2 different departments, civilian and military. Since the military department had no use for the carbine handguard and the civilian department wasn't yet set up for the molding process, the carbine handguards were fabricated by a third party in a large batch to save cost. The r&d guys and the manufacturing guys don't work in the same office so there was some delay of info prior to a large order of carbine handguards.
Also, the evo s1 was never intended to be sold with its current lower control group. It's too easy to merely swap out the internal parts to make it select fire. Much like how an ar15 doesn't have the third hole to install select fire components, the new lower control group is completely redesigned so that internal parts can't be interchangeable between the s1 and s2. Cz sales claimed they were pressured to get the evo out on the market prior to design, production and testing of a new lower control group. The weld was just a quick fix to meet federal guidelines both here and around the globe.
As far as parts ordered and received from cz, it's everything they currently have in inventory and nothing new. When cz usa receives new parts from their parent company in Europe, these are parts from their warehouse that were produced long ago. Cz is required under many foreign government contracts to keep a minimum amount of replacement parts on hand for evo A1's currently being used by these unspecified foreign goverments. I'm sure our country would be pissed if they signed a contract to use x amount of scorpion smg's or x amount of years and cz couldn't replace the parts half way through the contract term
So chances are pretty high that if you just recently purchased a new evo or new evo mag direct from cz, you're not receiving newer mags. The newer mags (b type) were just another quick fix. It was the cheapest solution to fix the mag problem until the release of the S2. Instead of redesigning the mag molds for a stronger mag, they just tossed the current mag molds into a cnc and machined out more material to increase the feed lip thickness.
My sources asked not to named, but said it was on me as to whether or not I wished to share this info prior to the public release of the S2. They work for cz and I first met them while I was working for the US army in Germany. I'm not asking anybody to believe me and I'm not looking for attention, the reason I didn't start a new thread about this. It just kinda came out with my fingers typing and my brain not thinking when I was responding to SouthernScorp's post regarding lack of response from Cz to exchange out his mags.
A final note. The A2/S2 has been out for some time now. Just not outside of the manufacturing plant and a select few private contractors. Naturally the S2 has a different receiver as to not accept an A2 nor A1/S1 lower control groups. Both the S2 and A2 accept and share the same mags which are completely different from the A1/S1 mags. Subtle changes have been made to the fire selector location, improved trigger and how the pistol grip attaches to the receiver.
I think they finally got it right, even if that meant that us S1 owners will soon be relying upon the aftermarket manufacturers to keep our evo's pumping.