A K98k with a stock that is made of phenolic resin over a canvas type material.  These were experimental stocks and were tested while the Germans were trying to find a way to make rifle stocks out of something besides the traditional walnut.  The walnut supply was greatly reduced as a result of WWI.  

I believe these stocks were assembled into rifles at Mauser-Borsigwalde (S/234 code) in 1937.  Most have been reworked to some extent and I have seen these stocks with a later date receivers but I believe the originals were made in 1937.

This example was reworked.  They were trials guns and were obviously abused.  The bolt is a S/42 armorer's replacement,  the rear sight and the trigger guard screws are replacements also.  This one has the original numbered stock.  

The stock has a separate serial number under the butt plate.  This one is 22.  Numbers in the 600s have been reported.  So, if the stocks were serially numbered, it seems that fewer than 700 stocks were originally made.

Rifle Pictures

Stock Pictures