Try egunparts or S&W
Believe that is a Marlin 101. Contact Numrich at their website- gunpartscorp. They list that firing pin for $5 plus shipping,
0.9268
can find on ebay for around 80.00
To change the firing pin on a Remington Target Master Model 41A, first ensure the rifle is unloaded and safe. Remove the stock by unscrewing the screws, then take out the action from the stock. Locate the firing pin assembly, usually accessed by removing the bolt; unscrew or unclip the old firing pin and replace it with a new one, ensuring it is properly seated before reassembling the rifle. Always consult a gunsmith or the manufacturer's manual for specific instructions and safety guidelines.
You will have to call S&W to find out.
The model 41 was made by Marlin it was a Glenfield model10 103 is the sears vender code for Marlin Try Numrich arms in West Hurley NY lists most parts for this rifle
The Model 57 is a 41 Magnum.
The firing order is 1342 and the coil packs are 41 and 32.
41 yrs old
from front of vehicle. Left to Right 1,2,3,4 dis __ |32| |41| The firing order is 1342
S&W only made the Model 57 and 657.
Absolute value of -41 is 41.