it's really not a good design and no i don't suggest taking it apart so I'll show you what it looks like so you can see.
it's a hollow pin (and very fragile) the wide is so tight in it has no give and it's bent at a weird angle. very easy for the wire to break the pin is soldered onto the wire and the top portion being wider prevents it from being pushed into the mod. the rest of the 510 pin assembly is hollow where juice can leak in so they put some sealant around the wire. also the spring is on the outside of the assembly between
most mods use a full 510 assembly and ground to the 510 and the wire has room to play and is soldered into a hole on the 510 assembly. some mods like the maxo have the wire soldered to a 510 thats already on a spring giving you plenty of room to play and has more durability.
here is what a 510 assembly looks like (a good one form fat daddy)
here is the wismec rx300 510 pin (same as the hedron for sure and i believe the joyetech primo as well) which snapped on me due to the poor quality and design
So in good conscience and keeping with my honesty, no way could i ever recommend these mods to people. now it doesn't mean people can't like or enjoy them, it just means it isn't good enough quality for me to tell people that i recommend it