Today i was shooting my Carbine and it doubled two times. Do you know a reason why this happened? All is looking OK . Any suggestions?
Thank you in advance
Ulrich
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Today i was shooting my Carbine and it doubled two times. Do you know a reason why this happened? All is looking OK . Any suggestions?
Thank you in advance
Ulrich
Has the trigger pull been modified? Too light of a squeeze on the trigger? Military rifles are often meant to be pulled at a faster, harder pull.
B
Worn/ modified sear. Firing pin protrusion out of spec or sticking. High primers, the wrong type primers ( Small pistol) with hand loads. Just a few thoughts.
Vintage Hunter's right. You need new parts. They are NOT meant to be yanked to fire. Standard squeeze. Examine and replace or maybe have someone have a look.
Ulrich, remove the fire control group. Check that the sear spring is in place and not damaged or worn out. Make sure that the sear is able to move up and down on the trigger body and that it's tail sits over the trigger ledge. The sear moves independent of the trigger to catch the hammer and prevent multi fires. Make sure the sear face that catches the sear ledge on the hammer is not damaged or worn round, it must engage the hammer solidly. After cleaning and inspection you can function test by hand cocking the hammer. With your thumb in the way to catch the hammer and preventing it from striking the frame pull the trigger. While still holding trigger to rear thumb cock the hammer. The sear should snap up and catch the hammer notch. Then release the trigger and see that the rear of the sear sits over the trigger lip at the rear. If any of this fails you may need to replace the worn parts,,,,trigger, sear, or sear spring.
If all insp OK turn your attention to the bolt. Strip it and clean making sure that the firing pin is completely free floating when reassembled.
Ulrich, it was late last night when I replied and I left a key part out. The Sear has an oval mounting hole. The Sear must be able to move forward and backward when installed in the trigger. Make sure the hole is not plugged up with junk and preventing the Sear from full movement, forward, backward, and up and down.
Attachment 20278Have major trouble attaching a photo to a thread now, the load process has changed :madsmile:
Hi JBS,
seems that the sear is the problem. What do you think, is adding material by laser welding worth an try? I´m looking for an new one and hope that i will find one over here.
If it is the Sear nose that makes contact with the hammer step, well yes if you know a very good machinest that can add some high grade material back. You would then need to temper it and case harded the nose. You would still need an original for getting the finished measurements or the mechanical drawings.
You are much better off replaceing the Sear with a new original. A Carbine Sear is not hard to find even on your side of the ocean. :thup:
Are there any restrictions in sending one from the US to Germany? It's only a $10-$15 part plus shipping for an Inland, more if you need a harder to find maker like Rock-Ola or IP/S'G'.
Bill Ricca will know the answer to that question :)
After it doubles, does it load a live round with a tripped hammer? Causing you to eject live round and reset hammer?
Herr Gunner,Quote:
Originally Posted by gunner
Ulrich, gebst Du mir Deine Adresse wieder. Ich habe ein anderes Sear brauche ich nicht. Ich werde ihn zu euch senden.
Groess Gott
Bernhardt
Yes it loads the next round and you can fire again.Quote:
Originally Posted by FTD1167
---------- Post added at 08:57 AM ---------- Previous post was at 08:56 AM ----------
Many thanks Bernhardt, PM is on the way.Quote:
Originally Posted by imarangemaster
---------- Post added at 09:05 AM ---------- Previous post was at 08:57 AM ----------
As far as i know are only parts like the Barrel or the complete trigger group and such parts not allowed to ship. $10-$15 is cheap and it is an Inland part.Quote:
Originally Posted by JimF4M1s
The primary cause of doubling in the M1 Rifle is operator induced. In virtually all cases the rifle only doubles, and never more than that. The trigger is pulled very slowly, and the rifle held lightly against the shoulder; many times from a benchrest. When the rifle recoils it hits the shoulder and bounces back forward where the trigger finger is still around the trigger, firing it.
If it were the sear, would it stop at only one extra shot, or would it fire multiple shots?
I had one that would do about 8 to 15. As long as you held the trigger back. Let off trigger and it would load a live round with a dead hammer.
From what I have read this did take place at times during production.
It was the sear spring..New spring and no problems...
Hi, it stops after one extra round( that costs me a crade of beer yesterday because i hit the light at 30meters). I´m shooting of hand from prone position and think that i hold it tight enough but i´ll have a look at the next time if it is really tight enough.Quote:
Originally Posted by Johnny Peppers
---------- Post added at 08:17 PM ---------- Previous post was at 08:14 PM ----------
...worth an try! Thank you.Quote:
Originally Posted by FTD1167
8 to 15 times is definitely mechanical problems. Match tuned semi-auto rifles fired from the bench are bad about doubling for the reason mentioned above.
I had the same problem last summer. I had just changed the barrel and put it back togeather. Loaded three rounds, when I pulled the trigger. It fired two rounds. The funny thing is it had never done it before. I loaded three more rounds, it done it again. I changed the sear, that fixed it. My M1A did the same thing a few years ago. A new hammer stopped that problem.