Quote Originally Posted by emmagee1917 View Post
If you took apart a nylon 66 and put it back together ( you did not say you did the latter )
Nice catch . You had more patience than I did...plus I knew a gunsmith. I took it to him in a bag and he got it back together...and told me to NEVER bring it back in pieces again. When Remington says "no user serviceable parts inside", you really should pay attention.

I have done a little googling and searching and have found many instances of contractors shipping parts to other contractors to fill shortages during production but haven't seen any Underwood hammers to Inland...Winchester did though according to this;

"(Organized by year. 1942 - 1944)

-Underwood shipped approximately 16,000 Firing pins to Inland in 1942.
-Winchester shipped approximately 1,200 firing pins to Inland in 1942.
-Rock-Ola Shipped approximately 10,000 sears to Inland in 1943.
-Underwood shipped approximately 4,000 Rear (Flip sights) to Inland in 1943.
-Winchester shipped approximately 4,000 hammers to Inland in 1943.
-National Postal Meter shipped approximately 25,000 Rear (Flip sights) to Inland in 1944.
-National Postal Meter shipped approximately 1,000 Rear Sight Leafs to Inland in 1944." cr. NaughtyMonkey M1icon Family

I can see why this can get in your blood...history, heritage, pride and lots of detective work/mystery. I can also see the problem with all matching vs how it left the factory.