This is a Noveske Flash Suppressor known as the KX5 chambered in 556NATO, model 5000519.
The Noveske KX5 Flash Suppressor will work on any barrel length. All KX5s are individually serial numbered for quality control and come with a crush washer for timing purposes. New slim design allows installation under the Noveske Handguard.
Features:
1/2X28 Thread pitch
Black Nitride finish
Heat-treated CM construction
