[Kgw911]

I just finished doing this for the FiveSeven so I figured I should be able to make it work for a USP. I bought a cheap USP parts kit from EveryGunPart, and I'm reverse engineering the parts to make CAD files. My cousin is supposed to loan me a USP45 to measure, but my kit is a USP40, so I'm hoping you guys can fill in the blanks. I've reverse engineered a p2000sk before, and from what I can tell there are a lot of similarities such as frame rails and trigger mechanism, the USP40 slide will even slide onto the P2000sk frame. The main thing I need is distance between the 4 pins (hammer, sear, trigger, slide stop), and some overall frame measurements like height, width, and length. Also, I know the 45 frame is bigger than the 9/40, but how much bigger? Hopefully I can get my hands on some other frames and post the measurement differences in this thread.

The way I normally do this is to fully reverse engineer the parts as is, then start modifying some things to be 3D printer friendly (beef up some thin parts, etc), so I'll have CAD files of both available when this project is finished. Also, the printed frame doesn't necessarily have to be a straight USP frame, I can remix it with some newer features like P2000 or P30 backstraps, so if you have any ideas for improvements let me know. Another thing I'm considering is building this kit as a 10mm, since the frame I have access to is the larger USP45 frame there should be room for the cartridge length, it's just a factor of finding a magazine that fits and tweaking the mag catch design/location.
Normally I sell these CAD models, but if I get some community support on this they'll be free for you guys.

If you guys don't mind taking some measurements for me, the best way to do it is to drift the pins out slightly and then measure with calipers outside-to-outside, then inside-to-inside edges of the pins, then measure the pin diameter. It's easier to infer the correct center-to-center measurement this way. If you do this from each pin to the 3 other pins, I can triangulate their positions on the frame.
A = hammer axle
B = sear pin
C = trigger pin
D = slide stop pin
So A to B/C/D, B to A/C/D, C to A/B/D, & D to A/B/C.

Nice. Would love to be able to print my own unique colored frames without paint....

 

[GiterDunn]

I just started working on this project again. So far I've modeled the slide, RSA, barrel, and slide stop pin of a USP full size 40 and a compact 45. I'm working on modeling the 45c frame and internals now.
I got sidetracked from the USP because I got a good deal on some P2k/P30 series parts kits. It took about a year of work and 17 iterations to get a printed frame working on the P2000sk. Turns out the P2k CAD that I thought was mine was some I had bought and it was way off, so I had to start from scratch.

But I've finally got it working, this version lasted 200rnds on a printed CF nylon ejector. That was just to test the fit of my ejector CAD, I'm getting some laser cut from 316SS from SendCutSend.
This gun is a graduation present for my sister, and a "resume" piece because I'm looking for gunsmith work. Cerakoted the mag catch, trigger, and slide crushed silver, jeweled all other exposed metal surfaces and all the trigger parts, gold filled the deeper engravings, printing the frame in Tiffany blue, and machining the sights from an iron/nickel meteorite, with rubies for sight dots.

 

[EZAM75]

Looks great can't wait to see some finished products !!

 

[1986s4]

This is all very cool and I hope your work continues ! If I could re-imagine the USP fullsize it would have a standard rail and accept P-30 magazines. I find the grip shape workable and I like the trigger reach better than the P-30.

 

[Tarrantula]

Please keep us posted on your available print files for sale. And keep it up, you're doing the Lord's work.

 

[sparquah]

If you're still developing this, we'd love to host a beta with you on the Gatalog. Join our Rocket Chat and get in touch with Dr._Death

 

[EZAM75]

Incredible work, you're obviously a very talented person!
hope to see the final product soon as your done. defiantly going to turn a lot of heads!!!

 

[uspc9me]

Very impressive work. It gives me hope for a P2000 with USPc/P30S style safety lever. Cheers

 

[grimpirate]

Was wondering if you would be willing to share the cross section of the proprietary rail and/or compare with the dimensions I have?

 

[grimpirate]

@gator33 It came to my attention that yourself and lobo industries produced an adapter rail in a group buy for the Mark 23, would you be willing to share the profile dimensions here?

 

[gator33]

@gator33 It came to my attention that yourself and lobo industries produced an adapter rail in a group buy for the Mark 23, would you be willing to share the profile dimensions here?

You'd have to ask Lobos about that. I helped with prototyping and distribution of the first few runs, but he has the CAD data.

 

[BROVVNlE]

Any updates? Looking to make my own .22lr HK USP and I have mine working, but would like to make the internals printable for others to be able to make one without so much trial and error.

 

[allengeary1965]

If you're still developing this, we'd love to host a beta with you on the Gatalog. Join our Rocket Chat and get in touch with Dr._Death

I hope you consider that suggestion, your projects do show a lot of promise.Dr_Death on the Gatalog will help you as well as everyone in the community will support you with your projects so please do it

 

[nasirstevenson0]

I love this with the 57 slide, but I don’t mean to ask stupid questions but what lower part kits should I purchase or look for and on top of that? What slides is this frame compatible with , and my last question in 2025 can I print this on a stock? Ender 3 v2 se?

 

[work2live]

I would be curious if you have modeled out the backstrap for the P2000sk. I am specifically interested to know if you could model a version of backstrap with an integrated magazine adapter, so it would be part of the gun and not an addition to each magazine. It would seem most of my X-Grips have dry rotted, and with the nature of this technology, such a piece would seem more sensible than buying replacement X-Grips.

 

[littledog1977.be]

@GiterDunn, I happen to Own a H&K USP in 40 cal, you let me know what dimensions you want and I'll do everything I can to get those dimensions to you.

 

[Thebiochemist]

Following for science