These are very good muffs, but not perfect. With that said, these are the only muffs that I use now on indoor gun ranges, because of the fit and the level of sound protection. So that's all good. The (relatively small) problems are:1. The muff enclosure is much wider than many electronic ear muffs. They are about 1/4 to 3/8 inch wider than my Howard Leights, for instance. This is not a problem for pistol shooting, but it becomes a challenge when you're shooting a rifle. The size of the muff interferes with the top of the butt stock on my AR-15, so I have to really have to spend some time locking my head into position without the butt knocking the muff off. It's doable, but just a PITA. The muffs are exceptionally good at knocking sound down, and the size of the muffs is an important factor. So, would I sacrifice some sound protection for a thinner muff that allowed me to get a quicker sight picture? No, I wouldn't. My hearing is very important because it's been damaged in the past by crappy ear muffs.2. The real reason for 4 stars instead of 5 is because of the sound discrimination. The sound is much more "tinny" than my Howard Leights, bu the important thing is that when there's a shot that needs to be muffled, the muffs filter out ALL sound for about a half second, even if the shot came from the other end of the range. That makes it almost impossible for you to have a conversation with someone while anybody is firing a weapon at your indoor range.What's impressive about these muffs is the fit and the snugness. They both contribute to make the level of sound protection outstanding. Walker's should do a bit of work on their electronics, IMO. These muffs, combined with the Leight electronics, would be the perfect combination, IMO.