Skip to main content
Help Center Community Shop

M-1 carbine firing pin

spotty bobek
Had 3 misfires out of NIB Federal power shock. Put them back in and still misfired. Is it three bad shells or bad firing pin. Nine have good strong primer hits,see picture.

[img][/img]100_1466_00-1.jpg

Appreciate your advise and will check the bolt and carrier. Another question would be,and Just thought of this after. I was shooting with a bad magazine,WWII vintage. The magazine fell apart,spring, bottom plate and last round were on the ground. Could a bad mag. caused the misfires?
0

Comments

7 comments

Date Votes
  • brier-49
    What do the 3 misfires look like?
    0
  • spotty bobek
    The first three,past the fired ones. Not even a mark on them that I can see.
    0
  • nmyers
    Probably neither.

    When you had the misfires, did you check to see that the bolt was completely forward & fully rotated?

    Who is the manufacturer of your carbine?

    Have you removed the bolt & checked the firing pin function? That is, you need to move the back end of the firing pin to see if the front sticks out of the bolt face without interference.

    Have you checked the extractor to be sure there is nothing caught underneath it? Does the extractor spring work properly? Is the entire bolt face clean?

    Neal

    EDIT: Spotty, you may want to edit your original post, rather than post a reply; that will keep us from hitting 10 replies, at which point the subject gets locked. In any case, a properly maintained M1 carbine has a safety feature design that prevents the firing pin from hitting the primer UNLESS the bolt is in battery (i.e., fully forward & rotated). I think that is the problem with your carbine, but can't tell why that would be happening from here. If you are unable to perform the checks I listed, this would be the time to take it to a gunsmith & request a "technical inspection". Some imports (primarily Blue Sky) were worn out & unsafe; identifying the problems & correcting them is a job for a professional.

    EDIT: Not likely the mag, as there was no problem stripping the top round off. But, tell us, have you field stripped your carbine since you got it? That's the minimum you should do before firing it, let alone trying to trouble shoot a problem.
    0
  • 11b6r
    If the primers are unmarked, then it likely AIN'T the ammo that is your problem, but the items listed in previous post. If primers are dented, then COULD be bad ammo- but your ammo seems to be doing what it is supoosed to do- not fire until primer takes a whack.
    0
  • spotty bobek
    It's an Underwood,imported.
    0
  • Laredo Lefty
    Underwood means its not some cheap commercial reproduction, but a GI Carbine.

    The fired rounds look like they got solid hits on the primers so you know the firing pin is not broken. I would suggest disassembling the bolt and thoroughly cleaning the firing pin channel, extractor, and ejector.

    It could be there is a build up of grit in the channel inhibiting the pins travel. Also clean the channels in the receiver the bolt lugs move in to ensure it can lock up properly.

    If some primers were not struck at all, my guess is those were out of battery.
    0
  • Emmett Dunham
    Nmyers, got it the bolt is not rotating all the way back into battery because of a weak return spring, replace the spring and you should be good to go!


    Emmett
    0

Please sign in to leave a comment.

Recent Activity