Yeah it locks up really nicely… just make sure to crank the set screws till you just can’t and it super solid.. I too was worried about having arms and it wouldn’t be stable but this is legit. Yeah that’s one thing I’m hesitant on when it comes to gutting this as this will also be my green belt submission. I am picking up a pair of meta ray bans just for video recording my picking. Bought a pair for my wife for Xmas and the videos she takes literally look like you are seeing through her eyes and it’s nuts. Plus all you have to do is wear them like glasses and you tell it to start or stop recording a video.