Re: marlin model 91-m1 tube fed
To tell you the truth, unless there is a constant reoccuring issue or something is definitely broken you should not replace anthing.
It might need a little servicing, polishing the hammer, bolt, receiver, feed ramp, Give the ejectors a good cleaning, etc... If you are hard pressed to replace something you can order a whole new trigger assembly and just pop it in.
Midway USA, Brownells and Numrich are probably your best bets. Numrich does carry new parts as well as used part. I hope this helps.
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