Nerf Mega to Elite Adapter

Barrel-adapter for Nerf Mega blasters (specifically Nerf Fortnite Flare) to shoot stefan/short or standard elite darts.
This is a modified push-fit, meaning you need (up to) two o-rings for optimal fit. I've used 19x15mm rings, which makes for a really tight fit.
You also need a length of 17/32" brass tube (about 70mm) for the elite-part of the barrel. Best results when pushed/hammered in from the rear, so it doesn't extend the front and blocks the break-action
Additionally, you need to remove or disable the AR, otherwise the darts might not fly at all

Apart from removing the AR, the whole conversion is reversible, although the combination of barrel/o-rings makes it a bit difficult.