Sig has good points and bad. In their prime, there were as good or better than any on market.
I had Sig 226 that was superb, except that I found the trigger return spring to be too weak. In rapid fire mode, I would "milk" it and it would not recover enough to reengage.
For years, I thought it was "just me" until I happenned on a book that said British SAS had same problem, so i felt in good company.
I have seen sig .380's fail to function right out of the box at the range, so a bit of humility is in order. Local gunsmith polished mine up, no problems since.
Sig service sucks. They believe: our guns don't go bad so its gotta be you, and B)we service law enforcement first, you must wait, sub-race peasant.
Despite the above, if you got one that works, you have the very best.