I have made observations recently on two different buttstocks that I believe to be Remington (Ilion) replacements on Parkers. They both exhibit a "Dogbone" shaped piece of wood inletted into the head of the stock. Clearly a measure to reinforce the head and prevent it from cracking.
Below are photos of what I am speaking of. The second one was a pre-1910 gun so it had the additional inletting for the top lever mechanism. Which suggests that these Dogbones were put into stock blanks as they came off Remington duplication equipment.
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I am not sure as to when these guns may have been restocked by Remington. The one had an actual Remington grip cap on it.
Has anyone else observed this Dogbone in the head of Ilion built or restocked Parkers?