A quick&easy adapter for the original X axis carriage on the P802MA, for a M10 pneumatic adapter. Just fix it with a screw on top of the original hotend and you're good to go. No extra hardware required. This replaces the pneumatic_adapter from this excellent tutorial by Mafiatorte: https://www.thingiverse.com/thing:2024308 so the whole setup can be used on a P802MA.
It can flex a bit, but does a good job nonetheless. Hope this helps you! ^_^
Personally, I'd recommend printing it with 100% infill, as it's not a big part and it won't consume much filament. But I had it working well with 30% as well, so you decide.