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March 26, 2017
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Disassembled and reassembled a 20 gauge Model 12 shotgun. In very good condition and operates well with one exception.
– With the hammer cocked and bolt locked, the bolt will not re-open using the slide lock button or by applying forward pressure on the forearm spring. Either one of the above procedures allows the bolt to re-open once the hammer is dropped.
Due to a lack of dummy rounds I have not loaded the gun however I cannot imagine it would affect this anomaly. Certainly this cannot be a normal function. How would a live round be removed from the chamber?
Hoping this is something simple. I would appreciate if anybody provide some insight.
Thanks, Jim
January 27, 1992
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Jim, With the trigger assembly removed, see if the slide lock is actually locking the hammer when you press the release. There should be no need to push the slide forward to release the bolt when the gun is cocked. It should just release and start to open if the muzzle is pointed up. The forward motion of the slide is only required when the hammer is in the down (fired) position. Hope this helps. Roger B
March 26, 2017
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Thanks for the clarification Roger. I believe the lug on the hammer is interfering with the slide release mechanism when the hammer is cocked. In the attached photo I am pressing on the release bar. See where in strikes the lug on the hammer. It should ride over this lug, right? In your opinion, the hammer in the correct position? There is also a little play in the pivot point of the slide lock bar.
What do you think?
Jim
January 27, 1992
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I had the same problem with one of my Model 12s. I had a gunsmith fix it. It looked like a simple fix, but I didn’t want to mess anything up. I believe he stoned the two parts so the latch would mate properly to engage with the hammer and release the action. He was “vague” with his actual process. “Gunsmith’s Secret” I guess. Roger B
March 26, 2017
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Great, thanks. Just to confirm, the “beak” on the latch bar is supposed to ride over the lug on the hammer, right?
January 27, 1992
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Yes, when the release is pressed.
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