Sig 556 pistol question

[Bongos]

I have some old preban AR mags, just confirming, since the Sig 556 is a pistol, just like a glock or any other pistol that can take preban mag, I can use my mags correct?
Nevermind, I found the answer but will leave this post for those whom did not know:
Bullet button required because the magazine well is outside the pistol grip and it has a threaded barrel

[Quiet]

And since, it needs a magazine locked, magazine capacity can not be greater than 10 rounds.




Penal Code 12276.1
(a) Notwithstanding Section 12276, "assault weapon" shall also mean any of the following:
(4) A semiautomatic pistol that has the capacity to accept a detachable magazine and any one of the following:
(A) A threaded barrel, capable of accepting a flash suppressor, forward handgrip, or silencer.
(B) A second handgrip.
(C) A shroud that is attached to, or partially or completely encircles, the barrel that allows the bearer to fire the weapon without burning his or her hand, except a slide that encloses the barrel.
(D) The capacity to accept a detachable magazine at some location outside of the pistol grip.
(5) A semiautomatic pistol with a fixed magazine that has the capacity to accept more than 10 rounds.