Unfortunately, just saying you "suck at documentation and build guides" is not an excuse. It is a reason to improve! With that said, the links provided to the hardware do not work, and you used AliExpress's poor excuse for item descriptions rather than actual specifications for the hardware. Ali's search really blows! They follow the "throw everything at the wall and see what sticks" approach. I found a suitable long spring on Amazon here: https://www.amazon.com/gp/product/B0B6J1QPZC/ref=ox_sc_act_title_1?smid=A2T37KO80TMWQQ&psc=1 This spring bulk kit should also contain the other springs needed: https://www.amazon.com/gp/product/B09C1DDHRV/ref=ox_sc_act_title_3?smid=A25FQ1MTF4GUFQ&psc=1 Then this bulk kit of M3 bolts and nuts should fulfill the rest of the requirements. I think the black fits nicely with the color scheme: https://www.amazon.com/dp/B0CMC3RCVX?psc=1&ref=ppx_yo2ov_dt_b_product_details The assembly video is also gone, apparently again, though it seems you have quite a few other videos for your other prints on Reddit. (https://www.reddit.com/user/BrewBoy420/) I have the base and the internals done at the moment. I hope to have the rest of the parts printed by the end of the evening and the long spring delivered in the next day or so. Hopefully, an assembly video will be made available by then too. ;-) If not, I'll see what I can whip up myself and share.

Fully assembled and in its new home with all its buddies. A relatively quick print, looks great in the matte colors. Once I was able to access the video, assembly was pretty easy. An "exploded" diagram added to the description could help those who can't access YouTube. Just a couple of minor improvements to strengthen some components, and it's a great little patio plinker.

The few improvements I suggested: For the magazine catch, I suggest using a brass threaded insert. This will allow a strong attachment with the bolt and provide some adjustment if needed so that the magazine can be released easily. (https://www.amazon.com/dp/B09TNK8GD6?psc=1&ref=ppx_yo2ov_dt_b_product_details) Then, on the upper receiver, enlarge the two holes for the spring rail guide a bit to allow for the insertion of brass inserts. This will keep the rail guide firmly in place with each pull of the bolt. Also, it looks like you just have the bolt lever friction fit. It's tempting to glue it in place, but this will lead to issues if it breaks. Not gluing it will make it easy to lose. A brass insert in the bolt and a hole in the bolt lever will create a strong lever that can be replaced if it breaks. Regarding the base of the magazine, consider reversing the structure. Instead of sliding the baseplate into the magazine, construct a baseplate that the magazine slides into. Think MagPul, if that helps. This will also allow you to make a "fatter" baseplate, which will make it easier to extract the magazine from the mag-well and even from magazine pouches. Here's an example: (https://www.glockstore.com/assets/images/products/Glock-Factory-High-Capacity-Magazines_main-0001.jpg?resizeid=7&resizeh=275&resizew=275) This will also negate the need for any support during printing. I ended up splitting the very thin edge when removing the small amount of support. For the loading issue you mentioned, try using a Z-shaped spring that fits the interior of the magazine. There may be too much movement between the magazine spring base and the magazine lift table, possibly causing misalignment when under tension with more than three rounds. Just a thought. Something like this: https://www.thingiverse.com/thing:5537203

is it a air soft gun or what

Parts printed great, but do you happen to have another source for the springs? I'm having a hard time finding the 85 and 130mm springs, and the aliexpress link no longer works.

Fun to print. Solid, construction and build. But you have to be exact with the dimensions/specs on the springs. Amazon sent me springs that SHOULD have fit but were not in spec and were too tight on the bolt. So I can't test the operation. When I have more time to spec some better springs I'll revisit. Other than that, a great looking sub machine gun style patio plinker! The designer is very priactive with improvments to his designs as well!

Assembly video wont appear for some reason, so here is a direct link: https://youtu.be/WH7zMJH1bRI?si=bcV9FZBhX4J0Doey