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Mauser V9000 trench rifle

While doing research on the 1917 trench carbine I came across a rifle that I have never seen or even heard of. The V9000. There is a video on YouTube posted by LAI Publications. I just fell for this cute carbine.Screenshot 2026-02-08 171240

It also dissembles and the stock comes off.

Screenshot 2026-02-08 142640aThere was a print of it taken apart.

Screenshot 2026-02-08 142144I thank LAI publications for posting about this rare and interesting weapon. I decided that I need one in my collection. There is no chance of buying one and it is full auto so actually making one that is exact is out of the question. However I can make a semi auto one. As with all of my projects I need to design it from scratch. With that in mind I have started just that, but I am making a few changes to the design. First I will make it in 9mm and not in 7.62×25 Mauser. Second, I am going to make it to use a different magazine. I have never been a fan of the Mauser style magazine. they are expensive, a number of the ones I have do no fit properly and they are hard to fine.

My favorite magazine for my Broomhandle projects is the Finnish M/20 smg magazine. They are available at Apex gun parts.

Screenshot 2026-02-27 164025It is a great magazine that I will cut down to 25 rds.

The first step was to design the lower receiver to use a M/20 magazine. I started this process with using a cut Chinese Schnellfeuer lower.

IMG_2093I was able to make a basic solid model but with the proper dimensions for the M/20 magazine.

IMG_2099There is a number of features missing from this model but, it is just a starting point. So I printed it out on m Bambu P2S 3D printer.

IMG_2257I was able to check to see if my magazine housing was dimension properly, and it was.

IMG_2256The next print will have the magazine release button. The rear of the receiver needs to be corrected. the bottom of the receiver is to thick and it receiver needs to haveĀ  internal dimensions reduced. I am currently working on the second model receiver and should have it completed by the end of next weekend. I also need to add the dove tail slot in the front of the receiver

Screenshot 2026-02-08 142242

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