K&F Concept (Keandoff Concept) introduced six new mount adapters for Pentax DA lenses for Sony E, Micro Four Thirds and Fujifilm X-mounts (Google translation):
For Pentax K-mount DA lenses (price: ¥4,500 excluding tax)
Other K-mount adapters (price ¥4,000 excluding tax):
Characteristics: cuts the inner reflection by matte coating to suppress diffused reflection of light. Adopt brass mount parts on the lens side. K&F Concept adapters are sold on eBay.