Madsen build

[phaux]

Got a Madsen parts kit in a trade the other day. Decided to take it out today and start working on it. These were sold way back in the day to many countries and chambered in 12 different calibers. They're top fed via a 30rnd mag and spit the brass out the bottom. Funny enough Brazil police used them as late as 2009 :P



The particular kit I have is in 30.06 This build will a reweld. It is going to be a post sample machine gun and registered as such as I'm an SOT. The barrel has been demilled per ATF specs and thus will have to be repaired as well. Upon finish I plan to test fire, blast, park and then coat. I would like to leave it simply parkerized but due to the weldment the color variance will def show.

These can be built into a semi auto variant as well for non SOT holders. Additional work such as installation of a blocking bar and modified fcg group would need to be done.

The kit



The inside of the receiver was the hardest part to clean up with the dremel. The torch really made a mess of the inside. Once everything was cleaned up the parts slid right together.

After a few hours of grinding and dremel use:



The next step will be to jig up receiver pieces and do a bunch of small tack welds so as to keep deformation to a minimum. The gap between the front two receiver pieces is pretty large, will have to use a backer plate of some sort to keep weldment within the receiver to a minimum.

[Moose242]

Badass man.


Those damn things represent a graduate course in cam dynamics.

[phaux]

Ya, the internals look nothing like a modern day weapon

[dee]

Very interesting looking. Are they a product of their own creation or were they made by one of the big players?

[YALE]

Cool man!

Whoa! Here's one in a 2-gun match!

[phaux]

Jigged up:



Front done and roughly cleaned



Thickest part of the receiver



Almost done on the rear

[Moose242]

Damn Chris, very cool! I have a ton of surplus M2 ball we can test her out with.

[phaux]

Thanks man. Welding is complete. Been enjoying the labors or grinding and cleaning the receiver insides with a dremel little by little for a few hours now

[CJ]

Looks good!

Here's a video of one firing on a tripod, pretty neat.

[phaux]

Those tripods are awesome. There's one like that for the Bren that I want as well.

[LANTIRN]

That is pretty fucking cool. I love seeing old demilled guns salvaged and brought back to life.

[phaux]

I see how you are repairing everything else, but what about the de-mil hole they have to put in the barrel?

I patch them, it's a tedious process but doable. Two of the drilled holes were centered, so no problem. Unfortunately the jackass thought he'd be funny on the last hole, the chamber, and do it off center. This caused there to be a small divet even after the repair. I've taken it out and test fired it but due to the divet in the chamber it's causing brass to stick after each round. I'll be redrilling the barrel on the divet side for an additional repair just for fun, but I've ordered a live barrel from a guy.

[phaux]

You drill the hole to a standardized size, tap it, take a set screw and screw it in, mark it, remove it, then form the set screw to the contour of the barrel, grind a slot in the top of it, install it, then tig weld it in. It's very time consuming but it works and on some parts kit barrels are pretty much impossible to find. If the hole is drilled on the chamber shoulder transition or off center it makes it a huge pain in the rear

[phaux]

[YALE]

Fuckin' TIGHT dude!