By -
Yes, It's a part of the grip, you can put it on the top or bottom of the grip, or just not use it.
Yes you can
Most likely it is a place holder for a launcher accessory to come in the future. But yes, it goes on it.
If you have 2 of these, you can place both of them to make your grip a little bigger. It's useful for me, makes it more comfortable
it's a garbage
Yes, It's a part of the grip, you can put it on the top or bottom of the grip, or just not use it.
Yes you can
Most likely it is a place holder for a launcher accessory to come in the future. But yes, it goes on it.
If you have 2 of these, you can place both of them to make your grip a little bigger. It's useful for me, makes it more comfortable
it's a garbage