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 Converting to P220 Cartridges ... Det.Pin Dimensions

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Cerwyn
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PostSubject: Converting to P220 Cartridges ... Det.Pin Dimensions   Thu Sep 23, 2010 1:33 pm

Converting the MGC68 MP40 from the older open cartridge & paper cap system to the c.p. P220 cartridge is a popular and successful modification.

I've taken dimensions from the Pin fitted to my own MP40 and drawn it up here




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also member of Living History Reenactment Groups.


Last edited by Cerwyn on Thu Nov 09, 2017 3:47 pm; edited 2 times in total (Reason for editing : images converted to servimg)
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Chris Rush
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PostSubject: MGC68 MP40 det pin   Sun Mar 19, 2017 2:55 pm

Hi Cerwyn, Thank you for your response and the specs. It would seem that the pins are standardized. Chris
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PostSubject: MPG68 MP40 det pin-no go   Sun Mar 19, 2017 4:25 pm

Hi Cerwyn,

Thanks for the tip. The pin does have a grub screw.

Unfortunately the pin has a collar near the base. When the grub screw is adjusted, the pin can only move in a forward direction.

I need to move the pin away from the carts in the mag. Right now, they practically touch one another.

I'm going to try to locate a couple of metal washers of sufficient height and diameter with the idea of finding a washer wide enough to move the det pin about 3/8" away from where it presently sits.

The acceptable choice will go into the trunnion then the det pin assembly will be seated on top of the washer.

With the right sized washer I think I can increase the distance from the tip of the pin to the cart in the magazine.

If this "solution" doesn't work, I think a machinist will need to reduce the shaft length.

Thanks again, Chris
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Cerwyn
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PostSubject: Re: Converting to P220 Cartridges ... Det.Pin Dimensions   Thu Nov 09, 2017 3:48 pm

Images updated

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