"This is good for the price. I like that it fold up so it can fit in my gun case/sleeve, however, the hinge makes it very loose. Putting it on requires either a hammer or rubber mallet. The plastic isn't the right rail size, so putting it on a metal RIS you have to force it on, and u will see the plastic from the grip being shaved off until it fits. even then it still requires a lot of slamming it on. The mount itself is rock solid, the problem is the hinge/joint that allows it to change positions. It has 5 positions, straight down, straight back, straight forward, and an angle in each direction. The handle itself is hollow, the back of it is actually open and empty, but your hand holds the front so it's no biggy. the grip is comfy, but the problem really is that it's not long enough. i mean i have long hands, but still. I recommend this for budget buyers, otherwise go after a higher end grip"