Spare Parts Container Reproduction for 1903 Springfield Buttstock recess Precision made on a 5 axis CNC milling machine of American Walnut. 

Each one will have the Cocking Rod, Extractor and Striker/firing pin included, NO CHOICE ON MARKINGS. These are unfinished so you can stain and finish to match your stock. Made in the USA. Shipping $8.00

It was issued to 50% of troops armed with the rifle during WWI.

Many pre 1920 stocks have the recess cut to install. Your rifle must have a small cut in the buttstock recess to allow clearance for the spare extractor.  Not all original stock have this.  You may have to make the small cut yourself for a proper fit in all later and reproduction stocks.