TF2 Flare Gun Mod from Nerf Flare Gun

This is an old project (+1 year) that I always thought needed more refinement, chief among them making it use silly shells and possibly, eject them. This is something I had done before the baby face blaster and these experiences just tell me I shouldn't try to fit printed parts to injection-molded plastic. I published it since someone asked, but I can't give any more instruction beyond what follows since if I need to do it properly I would have to design a jig for cutting and buy a couple more of these to cut up and test, which is something I don't really want to do. The functionality on this one is mid, but I think the look is definitely there :\

You'll have to remove the dart post and the top latch and get to this state. You can install the handle, the grip, the barrel, and the hinge (glue needed), plus a tinny piece of printed spacer on the hinge

Cut notches into the top side of the handle, 14 x 8mm for (1) and (2), and 8 x 2mm for (3) and (4)

Install the tf2_FlareGunV2_SealbaseOring or tf2_FlareGunV2_SealbaseFoam for either using an o-ring (12x18x3mm) or foam dart as a seal (all with glue), and also cut away the top of the latch plastic piece connecting to the spring in the picture, followed by installing the Flaregun Lock

Install an 8mm OD x 40mm (ish) spring in this location, need to be a strong spring because it's going to hold the breach

Opening the breach by pulling back the hammer + giving it a swing, or by use the breach handle. Closing it can only be by pulling back the breach handle

If given the chance, I'll use someone else's 3D printing blaster as a base, usingand not this kind of off-the-shelf mod

20250522 Update: Added Silly Shell adapter/new barrel

20250618 Update: Edit Silly shell seal connection