Nerf Slingfire jam/access door replacement

**Update 16th Jan 2023**

Resized screw holes on the door and spring rest pieces, these are now labelled v3. The holes no longer need to be drilled to the correct size to work with Nerf screws, but M2 screws will no longer work. The catch piece is the same, the v2 file is still accurate.

Replacement for the Slingfire's floppy jam door that refuses to stay shut. Three separate pieces, total print time is about three hours. With this, you'll have a jam door that locks shut and doesn't wobble or rattle, with a spring-loaded sliding piece to open the door should the need arise.

**Hardware:**
- 2x Nerf shell screws; designed to accommodate the longer 11mm screw typically used on most shells, also works with the shorter 9mm screws that are used on rail sections of Nerf shells.
- pen spring; maximum 4.5mm diameter.
- 2.5mm metal rod; reuse the one from the stock jam door.