What are the width of the slots on the Smith Enterprises Vortex? I bought a vortex from Bushmaster, they said it was genuine. It came in Quality Parts packageing, and didn't look quite right. I called Smith Enterprises, talked with the guy who machines them, he said the slot is .250" wide. The vortex I got from Bushmaster has slots .235" wide. Do any of you have the genuine article? If you do would you measure the slots and post findings here. Thanks in advance, beemvic.

The knockoff I got was also with Bushmaster instructions. See if you can get the support ring of a bayonet over it. If it doesn't fit then it isn't the real thing. Another thing is to look at the tines head on. There should be a pronounced angle or twist to them, not a straight up and down 90degrees unless it is a first gen vortex which I doubt. I will see if I can get my friend to take pics of the real vortex he has compared to the fake I have.

Any other ways of telling whether it's a knock-off?

I don't have a bayonet or an accurate measuring device.

Do all say: "Smith Ent." on it?

My Vortex definitely has a twist to it.

Maybe mine is a pre-production model and they forgot to stamp it?

I don't like knock-off's and I'll toss it in the ocean with the rest of the stuff I used to have if I find out it's a knock-off.

Not that any of my other stuff were knock-off's or anything, it's just that I was sinking in a boat and I had to dump excess weight overboard.

Damm paid $34.99 for the Vortex and it better  not be a fake!!!![:(!]

I have an early style vortex which the tines are straight on it, no other markings. I was told that they finally made them curved to keep the flash hider from coming loose during firing.

XM15E2, did you buy your vortex from Smith Ent.?

Hey Imbro,

You use that Vortex on your 10/22 or your .38??