[SiliconeSword]

That sounds kinda cringe reading it as half of that stuff already exists on VSRs like the 510mm barrel, but the steel cylinder and 90° trigger sound good.
Being Taiwangun, the price is probably $50-100 off of what it will cost in the US, so the trigger could actually be on the T11 level.
Still, a 510mm barrel should be something to consider if anybody wants to seriously get this thing, as I'm probably one of the only people who doesn't hate running an M4 that is up to my chest.

 

[SiliconeSword]

According to the description, it's aluminum trigger parts too. Considering it's a steel cylinder with aluminum spring guide, sounds like a disaster waiting to happen.

If the spring guide stopper is set up right, the spring guide won't matter at all, but if it's able to move up or down or side to side then you'll have lots of black sludge that could screw up your O-ring. Usually there's a bump on the back of a spring guide, and normally there's a corresponding dent in the spring guide stopper, but some are better than others. Maple Leaf went so far as to have a pin and hole, but I don't think that you're able to remove the cylinder without taking your cylinder parts out.

 

[SiliconeSword]

How exactly did you elongate the nozzle?
Some sort of pill or cream?