Kalatzi said:
They modded the SMG after that
No they didn't. Do not post unqualified information.
Quite simply, if the Sterling SMG was not on 'Safe', the bolt was not locked.
If the weapons had a sudden jolt to the buttstock, like jumping off the back of a truck and hitting it on the ground while it's pointed at your face, the bolt could ride back a few inches.
This was enough travel to pick up a round, chamber it and fire it with the fixed firing pin.
The same problem existed with the Sten, however, the bolt was locked, in the forward position, in a different manner. The cocking handle could be pushed through to engage a hole in the body on the other side. Something that was taught as SOP for normal carry.
Having been issued both, I'm more than familiar with them. The Sterling SMG has a very robust trigger mech and will hold the bolt back should it travel under power from firing, unless something interferes with the travel. You'd be lotto lucky to get it to fire once, let alone more than twice by throwing it.
Ditto for the Sten. Once the first round fires, and the bolt travels fully to the rear, it will be engaged and locked by the sear, unless interfered with.
Throwing it into a room just gives your enemy another weapon with a full thirty round mag.
People here are getting confused with the term SMG, so far as Sten and Sterling. They are both, invariably, SMGs.
However, in the Canadian military context:
When we had both in stores, a Sten was called a Sten. The Sterling seldom went by it's manufactured moniker and was the weapon we typically called the SMG. We seldom, if ever, used the terms Sten and SMG in the same sentence, unless talking about both.