SHUT UP AND TAKE MY MONEY!! I would buy one of these in a heartbeat.
I just saw that they had released one for the Scorpion. I would buy this one over that. I'm only familiar with Fostech though, I have an Echo in an AR.
I have one in my M&P 15-22 they are fun! Have put 1000s of rounds downrange with that thing, and chased many squirrels with it too.
I’m on my 3rd firing pin as well, so buy extra of those you may need em