Quick and simple easy to put on just got to make sure you get it really tight and centered over the ejection port and away from any cycling mechanism. I like it no more bending over to clean up. I would have shown them on the hunting tools but they don't like that on reviews. Hopefully you'll find this helpful and it gives you an idea of how it works.

These work great. Simple and easy to use and the price is just right.

Excellent quick shipping product does exactly as described 👍