I see this all the time. "I have this part that i took off my rifle will it fit my other rifle?". What in blue blazes is going on here? It is not good enough for you where the factory said it should be but it is on a different rifle. What am i missing? Maybe i am just getting set in my ways as i get older.
Bolt handles and triggers are the main parts i am aiming at here.

Rant over.