mg 42 semi bolt conversion

[Grubber]

well folks here is my own design for a semi auto mg42

bolt conversion it's about 1/2 done at this point

first thing to do is to grind off the full auto sear from the bolt (red arrows)

http://img.photobucket.com/albums/v315/ ... arrows.jpg[/pic]

Ground off and beveled.

http://img.photobucket.com/albums/v315/ ... 300424.jpg[/pic]

next I removed the roller pin and took the bolt apart

The roller pin was removed by grinding off the peened over part at the bottom with a dremel tool

Then after quite a bit of time designing and working on the lathe I have concocted my own bolt conversion design.

http://img.photobucket.com/albums/v315/ ... 300454.jpg[/pic]

Assembled

http://img.photobucket.com/albums/v315/ ... 300453.jpg[/pic]

Red arrow points to where the roller assembly will screw into the rear firing pin sleeve green arrow shows where the firing pin stop collar will contact.

More to come

GG

[Grubber]

A bit further along

Got a lot farther all that is left is the roller assembly and extension

Wide view of all parts.

http://img.photobucket.com/albums/v315/ ... 300456.jpg[/pic]

Rear assembly and bolt parts

http://img.photobucket.com/albums/v315/ ... 300457.jpg[/pic]

front assembly parts

http://img.photobucket.com/albums/v315/ ... 300458.jpg[/pic]

firing pin and spring

http://img.photobucket.com/albums/v315/ ... 300459.jpg[/pic]

sub assembly assembled to show how it is put together

http://img.photobucket.com/albums/v315/ ... 300460.jpg[/pic]

A look at the rear of the bolt and how the pin is supported

http://img.photobucket.com/albums/v315/ ... 300461.jpg[/pic]

the bolt head unlocked and the firing pin fully forward. As you can see the pin does not

even show in the pic thus it will not be able to reach the primer unless the bolt is locked in position

http://img.photobucket.com/albums/v315/ ... 300462.jpg[/pic]

Now a look at the bolt in locked position with the pin fully forward.

http://img.photobucket.com/albums/v315/ ... 0463-1.jpg[/pic]

GG

[Niner]

Looks like rocket science to me....but getting the dvd player to play through the tv looks like rocket science to me too.

[Grubber]

not rocket science niner just mechanical aptitude.

GG

[dromia]

I'm seriously impressed.

what sort of groups do you expect with a single shot MG42?

You got the sustained fire tripod for it? Should make a good rest.

[Grubber]

ummmmm it's a semi not a single shot.

I don't have the tripod for it..... Yet

it has a bipod standard and I am hoping for at least decent accuracy.

We shall see.

GG