

The finished gun was supposed to be able to exchange magazines easily, and I'd decided on a magnetic catch to hold them in place.

These still needed a fair bit of additions to be functional. This is one of the magazines loosely assembled to check for fit.

The bucks were made from MDF with acrylic parts and furniture tacks used for added raised details.Īfter the ABS was pulled over the bucks and trimmed out, the center section was inserted into a PVC coupler and gently heated until it retained the proper curve to match up to the front and back plates. These parts are assembled from three pieces which are all vacuum formed from ABS plastic. It's what I had! The lower grip sits on a long threaded rod which passes into the rear stock and the magazine catch.Īt this point I switched over to the drum magazines. The grip channels were added on my mill with a (very long) bit. The forward grip was also shaped from a block of red oak. I attempted to chisel out some sections, but the oak splinters very badly and I found grinding to be the best method of getting the proper look and feel. I started out with a rather angry looking grinding drum and gradually worked my way through 50 grit sanding paper all the way up to 400. Red oak is about as easy to sand as a block of concrete, so more drastic methods were used to get the stock into shape. The areas for the trigger mechanism and barrel mount were cut from the center section before gluing the sheets together, as this made these recessed cavities much easier to construct as opposed to chiseling them from a solid chunk of wood. I chose to make the stock on the gun from laminated sections of red oak. I scaled the stock on the Combat shotgun to that of the PPSH rifle, and the remainder of the blueprint was scaled accordingly. I started off with a PPSH diagram lifted from a vintage WWII manual which gave accurate millimeter dimensions of all the associated parts. Barrel heat sink, sights, drum magazine - many parallels can be drawn between the two designs. The combat Shotgun is based quite heavily on a Russian machine gun put into service during WWII, the PPSH-41.
