VFC Original Parts - RIS II / MK18 MOD1 Barrel Nut ( V021HGD1A0 )

As you would expect from VFC. It worked great used on a G&P M4 body. I needed it for a Nuprol DD MK18 handguard that I bought used without a barrel nut, then I looked for it everywhere until I found it here.
It came with a layer of some sort of grease, I guess to prevent it from rusting, but it was so thinly applied that it showed the special care they put into it. Very happy with the purchase.
In the photo is the end result of what I used the nut for :)