Andrew Tuohy is one of the most scientific gun bloggers out there, taking great pains to be as objective as possible in anything he decides to test. He recently did side-by-side comparisons of the most popular AR-15 flash hiders, muzzle brake, and compensators on the market.
In Part 1, he covers how they work to conceal muzzle flash in low-light conditions, and I found it to be quite an eye opener.
I’ll assert that while this test was conducted on 5.56/.223 Remington-chambered rifles, the basic principles should transfer to these same device designs in different calibers and firearm platforms.
Feel free to tell me why I’m wrong in the comments.