Nerf Hammershot - Uncompensated

thingiverse

The [Nerf Hammershot](https://amzn.to/2VSTT2L) is a fantastic gun to mod. I love the artistic mods I've seen where the lower "compensator" is removed to make the gun more svelte looking. This mod lets you replace the foresight with a piece that drops around and replaces the front-attachment point for the cylinder. So now you can achieve that svelte look while retaining the ability to fire darts. You have to cut away the lower support but other than that all the other changes are non-destructive. I may make another version to support that sweet mega-dart mod: https://www.thingiverse.com/thing:2848752 # Steps ## Printing See the print section below. For a stock hammershot you will need the spacer and the front end mod. Depending on how you cut away the lower portion of the gun, you may want the blank_fill piece as well. ## Assembly 1. Unscrew the clamshells. 2. Remove the cylinder assembly and the U-clip that holds the rear of the cylinder assembly in place. 3. Pull out the hammer-trigger-piston assembly. It should come out nicely in one piece. 4. Pull apart the cylinder assembly. There are several parts that are all pressure/friction fit together. Soaking the cylinder assembly in warm water for a few minutes might make this easier. You should end up with, the metal rod that runs along the whole assembly. A trapezoidal bushing that holds the front end of the cylinder secure. A cylindrical spacer, the cylinder itself, a spring, a crown 'gear', and the last piece that meshes with the previous and provides the ratcheting to rotate the barrel. 5. The front end mod piece and the spacer replace the second and third parts from the previous step: The 3d printed front-end mod replaces the trapezoidal bushing and the 3d printed spacer replaces the original spacer. 6. Re-assemble the cylinder assembly with the replacement parts: 1. Slide the rod through the front-end mod, the 'head' of the rod nestles into the recess of the front-end mod piece. 2. Slide spacer on. It should catch on the knurling. Do not make this too tight or the cylinder will not rotate. If you want to add a little lube at this point, it's not a bad idea. I used graphite. Any plastic safe lubricant will work. 3. Slide the cylinder on. 4. Then the spring. 5. Then the crown gear. 6. Press fit the final piece that meshes into the crown gear. Again, not too tight or the cylinder won't spin. 7. Now for the first irreversible destructive step: Cut away the lower support from the gun. You can cut it back as much as you want. If you want to match my exact steps, look at my pictures to see how much to cut. I used a dremel to remove most of the material and then a file to get the areas flush. 8. If you cut away as much as I did, the blank_fill.stl piece should fit in the hole you've just made--you might need to scale it up or down a smidge. The size of the hole is going to depend on how much you cut away, obviously. I hope this piece works for you as it was actually the most challenging to model / get right. 9. Okay, you should be good to reassemble now! 10. Put the hammer-trigger-piston assembly back in. 11. Lay the cylinder back in place, including the U-clip for the rear attachment point. 12. The front-end mod goes where the old fore-sight piece goes. Remove the original fore sight piece. Rotate the mod piece into position. It should be a snug fit. 13. That's it! Replace the clamshell and put the screws back in. Make sure it fires. It might catch the first few times so help it along. # Other Mods Other mods I used for this gun: - Replacement Hammer: https://www.thingiverse.com/thing:2793436 - Replacement Trigger: https://www.thingiverse.com/thing:3090150 Both required a little work after printing to get to work right. The hammer needed metal reinforcement and the trigger had to be filed to fit the gun.