If you shoot like crazy and have no skill you will hate this.
Ok so i don't own this product but i made something exactly like it after seeing it. I bought the cheap paint from wally world ( the kind that comes in the 100 round speed loader ). Then I sawed it in half just below the 75 mark on the tube. It wont fit unless you heat the edges with a hair dryer or something so its more flexible. Then it will slide on with some help and hold around 50 ball. I love it not as bulky as the stock hopper and.
If you have skill and don't need 20 balls a second like other people then this is great for you. But if you cant hit anything with out missing hundreds of times first then don't get it.