MM Aeon Pro X Barrel Kit

The MM Aeon Pro X Barrel Kit is built for one specific job: getting more FPS out of your Aeon Pro X by giving it a longer barrel than the stock setup. In Monkee Mods' own testing with the stock spring still installed, swapping to the longer barrel from this kit measured 180 FPS — a straightforward upgrade path if you're chasing more power without touching the internals or spring.

The kit includes a barrel holder piece with a grub screw to secure everything in place, plus a 25cm barrel to replace the stock length. Installation is a straightforward swap, but heads up on fitment: you might need to tape or glue around the dart gate to resolve air leaks after installing the longer barrel, since the added length can expose small gaps that weren't an issue with the stock setup. Budget a few minutes for that fitting step rather than expecting a completely tool-free, leak-free install straight out of the bag. If your Aeon Pro X is still running stock, this is one of the simplest ways to bump up FPS without a full internals rebuild.