1905 4th change heavy hammer?

arthur2647 · Feb 4, 2016

I noticed while playing more with my m&p that the hammer pull is very tough, is that normal? I have only cleaned it on the outside and in the grip, haven't gotten inside the side plate yet. I'm guessing it needs to be oiled or there is some kind of grime/rust inside because all of the videos I have seen of these old m&p's have very smooth hammer pull. And after cocking it about 50 times and shooting with snap caps, my finger is dead.

steelslaver · Feb 4, 2016

It is probably got a bunch of old dried out oil and the like inside. Pulling the sideplate off and giving it a good cleaning and then touch of oil on all the pivot points and slide surfaces is best. Second best is remove the grips take a can of carb cleaner with the little tube and spray it inside all the openings while working the revolver. Once the cleaner coming out of the gun is clean blow it out with compressed air or canned air then spray in a little quality oil. NOT WD40. In my opinion spray Canola cooking oil is as good as many fancy oils if you clean your guns in this manner regularly.

Alk8944 · Feb 4, 2016

If it is hard all the way it probably is in need of cleaning. If it cocks normally until almost fully cocked and then gets really heavy then tighten the strain screw as the mainspring is doing what is often called "knuckling". The end of the mainspring is stubbing under the hammer. When the strain screw is backed out the spring straightens out and becomes too long!

noonster · Feb 4, 2016

Adding to what Alk wrote, mine had a rough end-of-cock thing going for it - turns out the last owner put a wrong mainspring in it (too short). A new spring solved all.

cgt4570 · Feb 4, 2016

As others have said, pre-WW2 actions are as smooth or smoother than later actions, just a longer travel.

1905 4th change heavy hammer?

arthur2647

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steelslaver

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Alk8944

US Veteran

noonster

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cgt4570

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