It’s to counterbalance the reduction in price of the Hammers & Toilet Seats.
Carried a MP5SDA3 for a decade and put thousands of 147gr OSM thru it ....... Finest SMG ever made in my opinion and experience. I kept it clean and cared for it like my life depended on it because at times it did. A tri-mag primarily used, no optics just the issued sights and a sling.
Hk P9S in 45acp was my favorite handgun during that era but I also had a 9mm version so I could harvest from my MP5 magazines if needed.
Wish they would keep the MP5 with EDM/CNC manufacturing and lighter weight materials. Ergonomics of that platform were / are perfect “in my opinion”.....
With the threats these days I would like to see a rig built around the magazine, ie mag will fit the SMG ....AND ... the sidearm. I think a Glock 18’s 32 round stick mag would be a perfect combo for a Glock 17/19 with a SMG that uses the same mag.
Just a wish list for any make / model / brand to have common magazines .....