Read this carefully: http://masterpiecearms.com/shop/mpa930-16d/
Especially this part:
The disconnect is a consumable item and will need to be replaced. The life of the disconnect depends on the length of barrel of your MPA model, caliber and type of ammo. Life expectancy will be in the 600-1200 rounds range.
Just the thing every M-11/9mm owner would want, oh, but we couldn’t be bothered to heat treat it, so you’ll have to buy a new one every couple weeks…
Are you effing kidding me?
I want to get a patent on being a stupid asshole. I wouldn’t be one, I’d just sit on the patent so I could sue everyone else who decided to be a stupid asshole, and there would finally be a punishment for such behavior.