Stoner 63- most controlable Full auto rifle ?

[LRRPF52]

The Suomi doesn't move when you shoot it. You can write your name with it. With a 72rd drum, it became a close support weapon for the Finns.

It uses vacuum effect on the bolt, a strong recoil spring, and weight to achieve balanced recoil.

The m/45 "Swedish K" Karl Gustav 9mm SMG is the same way, only much lighter than the Kp31 at just a little over 7lbs, whereas the Kp31 weighs over 10lbs.

The Swedes made a copy of the Kp31, but with a reduced weight receiver tube, shorter barrel, higher comb angle on the stock, and a more simple rear sight. My late friend had one. Look center row, 3rd SMG down:



Left Column, from top to bottom:

Mp38 Schmeisser
Mp40
Mp41

Middle:

Thompson .45 ACP SMG
Suomi Kp31 9mm
Swedish Kpist m/39
Suomi Kp m/44 SMG 9mm

Right Column:
Soviet PPSh-41 SMG 7.62x25
PPS-43
Chicom PPS-43
PPS-43

SVT-38 below it. He also had an SVT-40, among other things. You can see quite a few other MG's in the room, but there were way more.