I put this together from parts of two incomplete Argus C4 examples.
The two were of rather different vintage, the body is from an early s/n C4 (0232447) and the shutter blade assembly, lens mount, and lens are from a late model C4R (1608201440).
There are differences in the way the two models are constructed, and it was not an easy fit, but I managed with some patience, cutting down a set of screws to a new size and a lot of testing, adjusting, and recalibration.
Now everything works well, and both cameras live on in a new conjoined manner.
Please click on thumbnails to see enlarged.
All images are (c) 2018 E.J.Kowalski.