Probably a copy of the turbine one that generates virtually no backpressure. Sig copycats everything.
Current Griffin cans already include piston assembly & you will need a spacer for fixed barreled pistol calibers. Just pulled the trigger on a 9mm can when they ran a promo for Revo & Resistance that include minimalist blast shield & taper mount brake for rifle conversion up to 20" .308Win though not auto-rated. Priced right too...now the wait...The Griffin Rev 9 is an excellent choice because it is highly configurable, extremely tough (9" BLK supers, FA 9mm), inexpensive, top rated for dB reduction, and not too expensive. The quick-detach mount means you can buy muzzle devices for anything you want to suppress and just swap it around. https://www.griffinarmament.com/Revolution-9mm-Silencer-p/garev9.htm
If you want to use it on a pistol with Browning-type delayed-blowback action, you will need a linear decoupler.