Extended Knockout Short Dart Barrel Mod
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A quick and easy short dart mod for the Nerf Rival Knockout. It bumps the FPS from 90 in stock form up to 150 (±10 FPS).
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Informacje o modelu
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- Printables
- Kategoria
- Other Toys & Games
- Licencja
- Creative Commons — Attribution — Noncommercial
For years people have been modding the Nerf Rival Knockout for its power, size, and simplicity; it's a great blaster. Modifying it to shoot short darts has historically been a pain, though. Whether you were using brass, aluminum, or polycarbonate, each mod took copious amounts of time, and the results were inconsistent. This 3D printed barrel aims to eliminate much of the work while producing replicable results. Short darts for all!
Parts:
There is only one model of the barrel, just many file types for your convenience. Aside from that, a pair of pliers (for stuck metal rods), some snips, a screwdriver, and some silicone grease (optional) will come in handy. A shorter version of the barrel can be found here.
Printing:
Nothing special here. Just make sure that the model isn't too tall for your printer!
Assembly:
Here's a quick video that shows how to install the mod and what the final results will look like. (The installation process is identical to that of the shorter barrel used in the video, though you may want to trim the air restrictor more to increase airflow and dart velocity)
I don't have a chronograph but was able to take some slow-motion footage at 480 frames per second, giving me a pretty accurate estimate of how fast these darts are flying (plus it seems to be slightly over-pacing the Aeon Pro).
Notes:
You will want to apply silicone grease to the inside lip of the larger barrel opening (where you load it) to improve the seal. You could get away without it, but I don't recommend that. Also, the inside of the barrel is intentionally tight. As short darts are used, they wear down and the foam gets compressed, making a looser fit. The barrel is this specific size so that the darts don't fall out when the blaster is in motion.
If the barrel is just too tight for you (maybe differences in print quality), you can edit the STEP or F3D file to loosen it a bit. Only widen the barrel by 0.05-0.1 mm. The other option is to take some sandpaper to it - your choice.