the cause of Hammer follow-down on Almost all DA auto pistols
- Thread starter lebombc4
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insufficient engagement between the hammer and sear
Fastbolt
Member
Sometimes an overly broad question is attempting to elicit a specific answer contained in some related training content.
On the other hand, hammer-follow in S&W TDA's is usually the result of:
Damaged sear spring
Damaged sear
Damaged SA cocking notch on hammer
Other things could include:
A problem with tolerances among parts in a particular gun, as well.
Also, heavy fouling ... (accumulated solvent/oils being where they aren't intended to be, which turn into sludge) ... resulting in sluggish sear movement can cause it (failing to move fast enough to catch the hammer and hold it in SA mode), but that's due to a maintenance issue and not an actual "mechanical" issue.
Depends what your "test question" is looking for you to remember.
On the other hand, hammer-follow in S&W TDA's is usually the result of:
Damaged sear spring
Damaged sear
Damaged SA cocking notch on hammer
Other things could include:
A problem with tolerances among parts in a particular gun, as well.
Also, heavy fouling ... (accumulated solvent/oils being where they aren't intended to be, which turn into sludge) ... resulting in sluggish sear movement can cause it (failing to move fast enough to catch the hammer and hold it in SA mode), but that's due to a maintenance issue and not an actual "mechanical" issue.
Depends what your "test question" is looking for you to remember.
4506517
Member
Didn't the last thread where someone was asking for help on a gun smithing test go up in flames?
sig.natures
Member
No gunsmithing advice, just experience. First, an assumption that no unexperienced armorer attempted to stone the sear '/ hammer engagements and got them too much out of line.
On a 1911 it is generally caused by someone trying to lighten the trigger pull and bending the flat sear spring too much. It will not cause the sear to engage as quickly as it needs and the hammer will have passed it up before it can engage.. The hammer following the slide home can and does cause unexpected "automatic" fire. I am guessing that it might be the same with your gun. Some of these are old guns and have had a lot of use. I just got a 4006 and I am going to replace all of the springs in it including magazine springs. A semi automatic runs on weight / mass of the various mechanisms and the springs that either power them or retard impact - example a recoil spring and a mainspring. Actually the recoil springs serves double purpose in slowing the rearward movement of the slide and advancing to power load pick up and placement in the chamber.
I agree with the previous respondent on cleanliness and his assesment of defective parts..
Good luck
On a 1911 it is generally caused by someone trying to lighten the trigger pull and bending the flat sear spring too much. It will not cause the sear to engage as quickly as it needs and the hammer will have passed it up before it can engage.. The hammer following the slide home can and does cause unexpected "automatic" fire. I am guessing that it might be the same with your gun. Some of these are old guns and have had a lot of use. I just got a 4006 and I am going to replace all of the springs in it including magazine springs. A semi automatic runs on weight / mass of the various mechanisms and the springs that either power them or retard impact - example a recoil spring and a mainspring. Actually the recoil springs serves double purpose in slowing the rearward movement of the slide and advancing to power load pick up and placement in the chamber.
I agree with the previous respondent on cleanliness and his assesment of defective parts..
Good luck
