This is a Noveske Flash Suppressor known as the KX3 chambered in 556NATO, model 5000517.
The Noveske KX3 Flash Suppressor will work on any barrel length. All KX3s are individually serial numbered for quality control and come with a crush washer for timing purposes.
Features:
1/2X28 Thread pitch
Black Nitride finish
Heat-treated CM construction
