Need help installing a firing pin in a Ranger 22lr

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I have this old Ranger .22 model and maker unknown. I lost the firing pin a year ago, appearantly the retaining pin had fallen out. I recently found a firing pin that looks exactly the same but I'm struggling to figure out how the retaining pin fits into the notch. It seems either the cutout on the firing pin isn't deep enough or the retaining pin needs to be precariously set rather shallow. I hope this makes enough sense!! I used a Brad nail to mess around with it, tried flattening the Brad nail to see if it would clear the cutout but it still wont slide all the way down.
 

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I thought it was the Marlin 100 (ranger 103.8) style. What makes you think it was the Cooey?
Because Eaton department store had a Ranger line which were all rebranded Cooey's.

Though Ranger was a generic name as could been a 39, 75, 78, 60..

Likely a Cooey Ace. Based on the stubby forearm. But bolts on many are interchangeable. Western gun parts likely have parts.
 
Thank you, that really does look very similar.
I have a Winchester Ranger made by the Cooey company, purchased by my mother in 1962 as a birthday gift from Eaton's department store west Vancouver, no FAC, PAL, DL nothing required to buy at that time. It also is without a factory serial number.
 
Still looking for some guidance about the firing pin and retaing pin! Should I set the firing pin with the notch facing out, away from center, and have the retaining pin going down stopping just before the firing pin? Or should I file down the firing pin and uncomfortable amount so the retaining pin clears the notch when set vertically? It seems like the amount that needs to be removed wont leave enough meat on the bone that way though.
 
I believe the Cooey firing pin is retained by a tapered retaining pin driven into a tight hole stopping short of contacting the sloped angle on the firing pin.
 
I believe the Cooey firing pin is retained by a tapered retaining pin driven into a tight hole stopping short of contacting the sloped angle on the firing pin.
So in this scenario the notched area of the firing pin would be positioned away from the center?
 
So in this scenario the notched area of the firing pin would be positioned away from the center?
It's just been too many years since I actually worked on a Cooey bolt to remember for sure. I believe in order to remove a factory assembled firing pin one had to take the bolt apart first and then drive the firing pin back into the bolt with that angle forcing the pin up... After I discovered that I simply replaced the $5 bolt with a new one if there was a firing pin problem. The firing pin procedure wasn't worth the time against the cost of a new bolt.
 
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