G19X USW - FMDA DD19.2 Remix Original model developed by FMDA - Ivan This frame is designed to emulate the shape and functionality of the B&T USW but in a printable Glock 19X pattern gun. Follow the base readme included in the DD19.2 build info, but for specifics on this: The design includes three parts, the frame (which is legally the firearm), the rear mount (two versions, one for a kit mounted T1, one for slide mounted optics), and a dogleg brace arm for the integrated brace mount. For supplemental hardware, you will need: 1. All Gen 3 G19 spec parts as highlighted in the original DD19.2 build docs. 2. G17 length magazine - This is a G19X format gun which means G19 magazines won't fit. 3. 3 x M3-35 screws with accompanying M3 nuts - screws SHOULD be flat head countersunk, however, other formats will work if you can't find them. You can also use a non-metric equivalent, but I can't guarantee fitment in the countersunk spots or the nut housings. These screws attach the rear mount to the frame, with the front one replacing the upper pin for the lockign block. 4. Hinge hardware - Multiple options here, but in my test build, I'm just using a 1/4"x2" bolt with the middle sanded slightly and a 1/4" nut at the bottom with one side sanded down to fit, along with the Ender 3 factory bed spring that works oh so well in these. A cleaner solution can include a 1/4" x 2" clevis pin (can be cut to length) with an accompanying cotter pin, just like on a normal "BooliBrace" setup. Note, the body of the brace mount is smaller than normal, so normal BooliBrace arms won't work properly. 5. If using the T1 style top mount, you'll need a T1 style optic. Loads of inexpensive options exist, but I'm running a Sig Romeo 5 and it fits perfectly. Print the frame however you'd like, rails up or rails down. It does print VERY well rails down. Print the rear mount (either version) with the rear flat on the bed, and the "arms" pointed straight up. This has worked well for me, feel free to try out other angles in this beta test. Print the brace arm however you'd like, but I designed it to print really well on its side flat on the bed. As always, PLA+ is a minimum here, print with your normal high strength settings, but I personally run 8 walls 99% infill (Cura), tree supports, 210/52 temps. This project is published under the MIT License