All together now, DON'T CHEAP OUT, Tim!
I didn't expect much out of this thing at $27.
The "gate" would bind a good deal and wouldn't move freely when installed. A fair amount of stoning was needed to correct the situation. The sides of the "gate" as well as the tab that protrudes into the striker channel needed attention.
I want to get acquainted with the mechanics of the SCD. Since the real thing is very, very difficult to acquire currently, this is the best way to get some time with the SCD IMHO.
How long it will stand up to my rigorous training demands, I don't know.
No, it's not on my carry gun. (A P10C is filling that role currently.)