Sold

[giants_fan24]

SOLD to 100yrd2cls

[CalGuns]

Prices?

[djslick75]

How much for the lower.

[giants_fan24]

sorry i was thinking of $350

[gimmejr]

A Sig lower probably should be in the accessories since its not serialized.

[aplinker]

[ZombieKiller]

So this will take a regular AR upper?

[georound1]

Not even close.....no way to make a standard AR style upper work.

[GartenZwerge]

Sig does make ar's... is it an ar lower marked 556?

[GarretB]

It's not a 516 lower is it? That would make more sense since you're calling it an "AR". If it is then it's compatible with regular AR-15 uppers. I'm not really sure why anyone would build a Sig 556 since all the components would have to be made by Sig. Might as well buy the whole gun.

[Seesm]

A Sig lower probably should be in the accessories since its not serialized.

uummm aren't ALL lowers considered firearms buy DOJ and ATF and LEO and all of us??

[antonio]

+1 ^^^

[fd15k]

uummm aren't ALL lowers considered firearms buy DOJ and ATF and LEO and all of us??

No. Sig 556 has upper as the "firearm".

[wildhawker]

No. Sig 556 has upper as the "firearm".

^ this.

Only the serialized frame is a "firearm"; Sig 556 uppers are serialized, not the lowers.

[georound1]

I can't seem to see any Sig 516 available for sale, so I don't think they're released. Plus his title says 556 lower.
Someone probably canabalized a 556. Some people mix and match the 556/551 stuff.