I just recently bought a SIG 556 rifle off someone who needed the money she said her son never shot it much and they didn't seem to know too much about the rifle it came with a sig red dot on it. I was looking into the red dot and couldn't find any information on it was wondering if anybody could enlighten me with some more info. It's not letting me post the image but the only identifying mark on the RED dot is STH-400A

I love my 556, but run a different scope on it, so as usual, I'm not much help

Can't see your pics

It's a Sig Holosight:

https://www.topgunsupply.com/i...losight-sth400a.html

Thanks I appreciate the info figured it was something familiar but couldn't figure out appreciate the help

Welcome to SIGforum.

We have a rifle forum for questions like this.

quote:

Originally posted by iron chef:
We have a rifle forum for questions like this.

He's new, he may not have known that.

Welcome, Shakesuma, and (click here) to visit Mason's Rifle Room (the rifle-specific portion of SigForum).

BTW: BamaJeepster is correct.

Love my 556 as well. I just run it with irons and no scope.

Another 556 owner here. Mine is a tack driver

Enjoy it! If you’re in a free state, file the Form 1 and SBR it...with the stock folded it is shorter than a 7.5” AR SBR. Throw a can on it too...it is nice having the adjustable gas valve for suppresses shooting.

I like my SIG 556, but the ergonomics of an AR just work much better for me. Of course, I won't be getting rid of this beauty any time soon (as in ever).

Now verbotten in Canada, alas.

Nice looking 556, parallel. If I weren’t in CA mine would look like that.

quote:

Originally posted by sjtill:
Nice looking 556, parallel. If I weren’t in CA mine would look like that.

Thanks. I learned about the Swiss style handguards (551?) from here at the forum. I love the look, and I really don't miss the "SWAT" rail that came on it as I tend to keep my stuff relatively simple.