Works as advertised!

This worked great on an AR-308. The mouth covers from behind the brass deflector to the front of the opening where the brass comes out. I have the brass catchers in various sizes, this particular one was awesome for the fact that it swings out for easy malfunction clearing. Likewise the version that slips on a rail mounted holder is a similar size and catches great. The only downside is that it is a nylon net...had a couple of the hot brass suspended from the net...figure I will make a bag out of cotton with a zipper, if the need arises. Super awesome to catch my brass, which I spend a good deal of work preparing...not to leave it on the ground. The retaining straps went in front of my scope mount and held securely enough. The thing did not present any issue causing jams...so, I am happy.