I bought one a couple months back.
Struggled a bit to replace the grip sleeve with the larger one.
But, all has been great since.
Fun and reliable little plinker.
Be careful if you disassemble the magazines to reassemble the "button" to the follower correctly.
Trust me when I say it can be mounted left, right, up or down.
It will still work, but the disconnect and slide lock may not be happy.
Best to do one magazine at a time so the other can be used as a model.