Here is an updated picture of just the HK/CETME weapons...
Top to bottom...
CETME built on a CAI Cast G3 receiver with wide handguard, HK91 style grip frame and FCG, bipod, scope and cheekpiece
CAI3 with a Cast reciever, wide handguard and Navy style G3 grip frame
Inter Ord. receiver built on an FMP parts kit with wood furniture
SW5 with Navy style grip frame
A couple of CAI cast G3 receivers in various stages of assembly
One of my 2 FR8 rifles.