The Mac 9 weighed 3.5lb IIRC, a longer barrel will add to that but it gives yuo and idea of what might be possible.
Would it be any good is a whole different question.
Would it be any good is a whole different question.
Really don't need Aerospace tolerances, or even Automotive level,, but STEN tolerances at minimum.s. Die-cast just tends to have problems with bubbles and other defects
Most of the weight was in the bolt. For a locked breech, you don't need that.It will be grossly abused and neglected by it’s users and has to stand up to that. Second
line troops notoriously neglect their weapons.
The Sten Gun came in at 7lbs and an M3 at 8lbs, so a half weight Sten Gun is questionable to my mind.
As with racing, lightweight costs more than heavy.That and the pricepoint would be significantly raised
As with racing, lightweight costs more than heavy.
Contract is set for 3.5 lbs, and hard to get there without light alloys.
Will take more than a pound to go from 32ACP or 9mm Short to a higher power 9mmJob done with a pound to spare. Beef it up a bit to take 9 x 25mm and give it a longer barrel and it'll do nicely.
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I would go with a very slim steel rifled barrel, but supported by a magnesium alloy sleeve that does double duty toast as trunnion/ fit into stamped steel lower.You can note that the required effective range is 150-200 yds vs. what became the M1 carbine. That means the barrel can be half of the lenght of what M1 used - a weight saving. Reduce the use of wood as much as possible, replaced by plastic front stock and the wire buttstock - again reduces the weight. Receiver can be lighter, since a less powerful cartridge is sufficient (even the 7.62 Tokarev works here).
Fair enough, so go with the 7.63 Mauser round or 7.62 Tokarev and semi auto only.Will take more than a pound to go from 32ACP or 9mm Short to a higher power 9mm
Its at this point that its realized that the requirement is stupid and unneccesary and its changedAs with racing, lightweight costs more than heavy.
Contract is set for 3.5 lbs, and hard to get there without light alloys.
There might be good reason for the light weight.Its at this point that its realized that the requirement is stupid and unneccesary and its changed
Let me give it some thought, will get back to you.Steel stampings here, aluminium alloy there, bakelite pistol grip and hand grip? Barrel length can be about 10 inch, as on the SMGs of the day, again less weight than the long barrel used on the M1 Carbine.
I'd certainly prefer layout of an Uzi, or a (stocked) pistol to keep the weight down - in other words, magazine goes in the pistol grip, behind the trigger.
The wire buttstock like used on the Grease Gun should improve the hit probabilities beyond 100 yds, while not being too heavy.
@cortz#9 - can you whip up something here
Job done with a pound to spare. Beef it up a bit to take 9 x 25mm and give it a longer barrel and it'll do nicely.
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Hmm - shape and size of Mini Uzi, 8-10 in barrel, with Browning action inside?Or something like this: Mini Uzi Carbine.... although with smaller hands (smaller people) in 1940, it would probably need a short case like .357 Sig or 7.63 Mauser to be effective to 150 yards.