FotodioX Pro Lens Mount Adapter for M42 Lens to Pentax K Mount Camera
Amazon.com : Fotodiox Pro Lens Mount Adapter - M42 Screw Mount SLR Lens to Pentax K (PK) Mount SLR Camera Body : Electronics
Genuine Asahi Pentax Pentax K mount to Pentax M42 Screw Mount Adapter | eBay
Kipon Pentax M42 Screw Mount Lens to Pentax K Camera Lens Adapter KP-LA-PXK-PXS
Which M42-PK adapter?
Fotodiox M42-PK Lens Mount Adapter - M42 Type 1 Screw Mount SLR Lens To Pentax K Mount SLR Camera Body | Walmart Canada
M42-PK Adapter Ring Manual Control for Pentax PK K Mount For M42 Threaded Lens T 8852086677452 | eBay
Manual lens adapter ring M42-PK - K&F CONCEPT
K&F Concept M10221 M42 Screw Lenses to Pentax K Lens Mount Adapter - KENTFAITH
FotodioX Mount Adapter for M42 Type 1 Lens to Pentax M42-PK-V1
M42 Screw Mount SLR Lens to Pentax K (PK) Mount SLR Camera Body Pro Mount Adapter – Fotodiox, Inc. USA
M42 Metal Lens to for Pentax PK Mount Camera Body Adapter Ring for K-7 K-M K-3 K-50 K-5 II K-30 K-01 K-r K-x Camera Accessories - AliExpress Consumer Electronics
Metal M42-pk M42 Lens To Pk K Mount Adapter Ring For Pentax Camera - Lens Adapter - AliExpress
Aluminum Camera Lens Adapter | M42 Pentax | M42 Pk - Aluminum Camera Lens Adapter M42 - Aliexpress