Mercury Plus Stock and Rail Kit for Nerf Mercury

The Mercury is a weird side-prime Rival pistol that's a little hard to use without a stock. I decided to add a stock attachment point so it's usable as a short barreled rifle. I also added sling points, and the whole unit acts as a rail riser too. And just for good measure, I created a version with picatinny rails. It's surprisingly fun to use now, like a smaller Jupiter with modular options.

Since this is a piece that takes a lot of stress, I'd recommend at least three walls and 25% infill. It does work with less, but you don't want this to snap while you're using it. Adjust to your liking. You will also need supports no matter how you orient it, but the way I've oriented the files works well enough for me. The model is a hair over 200mm long, so you may need to rotate or split it to fit onto smaller build plates.

You will need some toy screws left over from another blaster. If you're using both a stock and rail attachment, you can get away with not using screws at all, but I wouldn't recommend it.

This is the first 3D-printed Nerf mod I ever made in 2024. Thus, don't expect the highest level of quality. It was a learning project and I only recently did some final touchups after getting a better printer.

If the sharp corners at the bottom of the stock point bother you, I recommend sanding them down a little. There were a couple times I caught them with my hand.