Anyone know what this is?

[Dustbuster]

This showed up in a box w other stuff, I thought it was a seekins something at first but none of it makes sense. It has a tiny steel roll pin and that's it

[runco]

I know what its not.

[Garufa]

It's a doohickey.

[56FordGuy]

That is without question, one of them there these here. 

[jacob]

Extended slide stop for a tactical Pez dispenser....

[Clod Stomper]

What about a size reference?  What was the other stuff in the box?  

[Symbolic]

Looks like either a slide lock/release tab or a magazine release button. For what? I don't know.

[TrickyNicky]

Looks like either a slide lock/release tab or a magazine release button. For what? I don't know.

This. It almost looks like a tacticool SKS recievr pin sort of. It may serve a similar function on a different weapon. I'm guessing that or some kind of bolt\slide stop.

[Dustbuster]

It is some type of release I believe I'll grab a reference something and take another pic of it it's small, it's not an ar part for sure. The rectangular pad has ridges going across it. At first u thought I cool fat mag release button... Not

[DaveTN]

Not exactly, but looks close to a Norgon Ambi-Catch.

[Guest kingarmory]

Looks familiar, just can't remember what gun it goes on.

[glowdotGlock]

I at first thought it was a "take down" pin but I'm not so sure. I bet it has to do with disassembling something or releasing something. :P

[satalac]

Not sure, but I'm sure you'd be attested for possessing it in New York.

[gjohnsoniv]

Is it an ambi mag release off of something like a Sig AR?

[zgunbear]

Looks like a bolt hold open for a FNFAL

[Dustbuster]

Negative on sig ar

[bersaguy]

Well it looks like it's a no one knows what it is tool/Gun part........................jmho

[Dustbuster]

the round end is not threaded, it has a small hole and takes a small 1 piece stainless pin

i also checked sig's site its not an ambi for a 516

Edited September 16, 2014 by Dustbuster

[Garufa]

Have you contacted whoever you got this from to find out what it is.....before I lose my mind?

[Dustbuster]

I looked through receipts and can't find anything on it.nothing and there's no part numbers or markings on the bag. Edited September 22, 2014 by Dustbuster

[deafdogdief]

That pesky part left over after changing the oil pump in your car?