Attachments are confirmed
Steam identifies attachments as one of the player’s options. It does not state which weapons accept them, how many can be equipped, or their numerical effects.
Test rather than assume
Use the in-game interface for compatibility and effect details. If a guide entry comes from testing, tie it to the observed version rather than presenting it as an official rule.
Source
Official Steam listing (retrieved July 23, 2026).
Q: Are attachment bonuses published?
Not on the public Steam listing.