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MG34 Semi Auto Trigger Tutorial

Ask your build questions here. Welding, assembly, etc.
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MG34 Semi Auto Trigger Tutorial

Postby Pirate » Thu Nov 22, 2007 4:55 pm

Converting the trigger to semi auto is fairly simple, you need to grind a slot and drill 2 holes to install the trigger rollers. the only hard part wil be drilling the holes as the trigger is glass hard, so a carbide bit is a must.

First step is to grind off the tab on the back of the trigger as shown in the photos.
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Re: MG34 Semi Auto Trigger Tutorial

Postby Pirate » Thu Nov 22, 2007 4:59 pm

Next the rear of the trigger needs to be opened up for the rear roller, you can do it with a cutoff wheel in a dremel.,
the slot needs to be .200" wide to fit the TNW rollers
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Re: MG34 Semi Auto Trigger Tutorial

Postby Pirate » Thu Nov 22, 2007 5:04 pm

Next 2 3/32" holes need to be drilled for the roller pins,
The front hole is .165" in from the front of the trigger and .145" down from the top.
The rear roller hole is in .190" from the rear and .129" down from the top

The rollers are .280 Dia and .197 thick with a .094" hole
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st3.jpg

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Re: MG34 Semi Auto Trigger Tutorial

Postby Pirate » Thu Nov 22, 2007 5:06 pm

An alternate method that may work is to fit a piece of teflon or nylon in the trigger slot for the trigger to ride on. I may try this to see if it works.

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Re: MG34 Semi Auto Trigger Tutorial

Postby www.Prussia.us » Wed Jan 30, 2008 8:05 pm

Did you ever see if the nylon or tephlon (SP?) in the trigger slot worked? Is there a sticky on US parts compliance with the SA Mg34? Thanks
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Re: MG34 Semi Auto Trigger Tutorial

Postby copewest » Thu Dec 24, 2009 12:51 pm

hi is it just me are is there some thing with the pictures.

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Re: MG34 Semi Auto Trigger Tutorial

Postby carlque » Wed Mar 24, 2010 1:39 am

What happened to the tutorial pics????? rod

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Re: MG34 Semi Auto Trigger Tutorial

Postby Swiss » Mon Apr 04, 2011 4:54 am

Moderators: Is there anything you can do to get the pictures back up?
I too, have a keen interest in this tutorial as I am just getting around to building my 34.
I have Pirates receiver and the bolt work finished so now I'm at the trigger.
Any assistance would really be appreciated.

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Re: MG34 Semi Auto Trigger Tutorial

Postby salt6 » Mon Apr 04, 2011 6:43 am

Not likely, they were lost due to a forum move.
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Re: MG34 Semi Auto Trigger Tutorial

Postby Bil » Mon Apr 04, 2011 10:29 am

For the pictures and tutorial,much more-just click above where it says ProjectGuns.com Takes you to his website,on the mg42 tutorial.Just go to the home page,find the mg34 tutorial,there are 2,one for receiver,one for bolt mods.Plenty of pics,words,measurements,all that stuff.Enjoy! :) ---bil
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Re: MG34 Semi Auto Trigger Tutorial

Postby Woodey » Thu Jul 18, 2013 9:08 pm

is there any reason I can't see the pictures?

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Re: MG34 Semi Auto Trigger Tutorial

Postby 42rocker » Fri Jul 19, 2013 9:24 am

Why can't you see pics -- several reasons

1st this site got hacked -- lost pics
2nd during an upgrade -- things went bad
3rd folks have used off site hosting -- after time some hosts take pics down
4th some folks have changed their minds on what they share.

There -- 4 reasons -- I'm sure there are more but those four are the basic reasons.

Later 42rocker


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