Yes, it does.
Yes. Anything that fits the 43 on the upper non polymer part of the gun will fit the 43x because it is identical. The difference between them is in the magazine area mold. The 43x is longer and holds 10 rounds versus 6 in the 43. You cannot use the magazines between them interchangeably. Most other parts should work, including triggers and attachments such as the TLR-6.