I inherited my mother’s hunting rifle. When I went to shoot the rifle, I noticed that the hammer would not retract all the way back when I used the lever action to chamber a round. The hammer half sets and then I need to thumb pull the hammer the rest of the way back in order to pull the trigger and fire the round. No issues with chambering, firing or ejecting the round.

I had someone with low to moderate knowledge of lever actions tell me that he thinks I need to replace the sear.

1. Any thoughts from those more familiar with the Winchester 94 platform on whether this is symptomatic of a sear issue or could it be something else?
2. Also, if I need to order a new sear, are there any other parts that it would be a good time to also replace while I am in there?
3. Any recommended websites to purchase parts?

I appreciate any and all thoughts and suggestions as I am not familiar with lever action rifles.

Thank you