Your thoughts on this cheap regulator?

[redlined_b16a]

Was entertaining the idea of purchasing a ninja flex adjustable regulator and I came across this device.

Seems too cheaply priced to be true.
I'm looking to use a 4500 psi tank and regulate to 2800-2900 psi.

[Motorhead]

Last year when up at JSAR was speaking with Travis about these being he had a few laying around they had played with.
IIRC the safety margins of material thickness and threads used scared the h e l l out of them deeming them unsafe.

FYI ...

[woogie_man]

When dealing with the pressures that we are playing with, you might want to get a known good quality product.  This wouldn't be the item you would want to ever fail on you. 

Spend a little extra and get a good quality item, and have some piece of mind when you are using it.

[redlined_b16a]

Agreed on safety.
Never seen these before thought I'd see what you guys know about them.
They look sketchy to me.