I purchased a really nice Remington Model 742 in 6mm, in shipping 1/2 of the receiver “charger” was broken.
If charger isn’t the appropriate term, the extended curved extension one would use to extract the chambered shell is what I’m referring to.
Are these interchangeable within the 742 Model?
Is there a shop that one can trust with shipping an original Remington part?
And lastly how do you extract these and then replace one correctly?

ANY GUIDANCE IS MUCH APPRECIATED!

I’ve owned many 742’s and have never had one to be repaired in any way, I can generally find my way around shotguns pretty reliably but semi auto rifles wise I’m a virgin.

Thank you in advance.
John