New Thompson 1927 A1

[sheepherder]

Originally Posted by ithacaartist

...I'm not familiar with the mechanical characteristics of the open bolt that make it what it is....

I've fired a Sten, an MP-40, and an Uzi...All open bolt full auto...And there is a delay from when you pull the trigger and the bolt is in motion and finally strikes the cartridge...A noticeable delay; maybe a quarter or even a half second...

And while the bolt is being driven forward by the recoil spring there is an equal force pushing backwards (Newton's Third Law) and this gives the smg a floating feeling...And none of these is especially light, but the feeling of that mass in motion gives them a very light fluttery feeling...

...YMMV...