AK Sponsor
Posted: 3/19/2008 1:36:50 PM EDT
This happened to a friend's AK two weeks ago. .jpg) I don't own an AK but thought this was an interesting type of failure. You guys ever seen anything like this? The same guy had a second AK experience a broke firing pin just this past Sunday in a class. Poor dude can't catch a break. LOL. I know very little about AKs in general but wanted to see what you guys thought this type of failure. Take care, Mark |
|
It is a full-auto gun. The case just ended up like that. We popped the dust cover off to remove the case. It was having some other feeding issues during the day, but I honestly don't remember what was happening. Again, I'm not really an AK guy. I actually am hoping to learn from this. I believe the gun was having ejection issues??? Mark |
| That happened to a buddy of mine. His AK isn't FA though, but it kept having jams similar to yours. Sometimes, the AK would be able to keep firing, despite having an empty casing back near the trigger group.It is a Bulgy AK74 kit built on an Ohio Ordnance receiver. When he sent it away to get diagnosed and fixed by a smith, he was told that it was doing it because an AK47 ejector was used on the AK74 receiver?? Sounds odd, I know. |
The only difference is that an AK74 ejector is longer than an AK47 ejector by enough to make up the difference in the smaller 5.45 case head. |
On my Bulgarian AK-74 (SLR-105), the ejector is completely flat, as in it does not have the stamped-in clearance "bump" of the AKM ejector. |
That's strange, it also looks like an Arsenal trunion (the mark before the serial number). Does Arsenal of Las Vegas make full auto dealer samples on OOW receivers or is your buddy a licenced manufacturer? And what is that shiny bump poking out of a cut under the trunion rivets? |
Bulgarian Kit. Post sample receiver. |
| there should be very little room between the bolt & ejector tip, just enough clearence it dosen't drag or push on the bolt. if the ejector dosen't fit close enough to the bolt you can mig weld a spot on the ejector tip & file/dremel it untill the bolt clears it. the weld is usually hard enough to not need heat treated. |
Hey Mr Bookhound. Ole Wardawg here .. I had that exact jam at one of our CE Shoots. It was with a OOW receiver and a Bulgie 74 kit. Just like the guys here already stated... the EJECTOR was a 47 ejector and I had a 74 kit. It was OOW fault. They screwed the pooch. Inrange welded the ejector tip to extend it. I hate the OOW receiver.I had many issue with it. Rail height, which caused Mag / round feeding issue. Had to ground the selector plate thinner to raise up the rear of the mag. . But I just got me an NDS-2 Receiver in and just sent it off to InRange to be overhauled... Just in case them Democrats get into office ..LOL.. Good luck WarDawgPS IT's easy to trouble shoot the ejector problem. Just take cover off and pull the charging back. Watch it passing through the ejector area .See how much of the ejector is passing through the bolt slot. It may seem like your getting full ejector or enough to make contact to knock the spent case out. But while its passing through see if the bolt / carrier can be wiggled side to side and get the ejector surface to put minimum contact on the spent case. Actually you can look at the spent case and tell as well. It will have barley a mark on it. Mine would actually slice the edge of the spent case. That bolt carrier is twisting bucking as it travels backs under load from a firing round. If it will move enough to cause it to miss or graze...There your problem. WD |
| i also had that same type of jam on sunday morning, first jam since i changed from hp to fmj(about 500 rounds). my next fire the shell jammed between the bolt and the barrel, that is when i noticed it. when i took it apart i dropped it onto the ground into the rest of the cases and couldn't find it. the next/last 100 rounds of the day i had no jamming issue |
How much did you have to thin the selector plate? I recently aquired an AMD-65 build on a OOW receiver & it seems to have the same mag/feeding issues. Some mags work, others let the bolt slide over the cartridge & don't feed at all or barely catch the base & jam (always the left side cartridge it seems). Comparing it to my 5.45 Romak2 it's obvious the mag doesn't sit high enuff...the bolt on the Romak almost touches the follower on an empty mag & the top of the mag almost touches the ejector. On the OOW the mag has lots of clearance between it & the ejector (~1/8"), the bolt is nowhere near the mag follower. Looks as if the selector stop needs to be about 1/2 as thick to raise the mag up enuff to feed 100%. My other AMD kit is going to go on a NDS reciever after seeing what this OOW one is like.  Also... Any issues with the welded ejector? It seems nobody makes a 5.56 specific receiver & 5.56 has a smaller rim than even 5.45. I have a Norinco Type 84 5.56 barrel/trunnion set up but no easy way to complete it. An Global Trades/Elk River 1.6mm receiver seems to be the way to go for a Chinese build. |
Honestly I don't know how much was removed from the selector plate. Troy Sellars at InRange did it . You could possibly email him and maybe he can help or even give you a price quote for a repair. Wish I could help more , WarDawg |
I had to do that on my first build. I used spring steel (of course) and then cleaned it up with a file. You said that "the weld is hard enough" but this is giving the wrong impression. After you TIG weld it, there will be areas that are TOO HARD, thus opening the possibility of the ejector breaking off completely! Therefore, after you do this weld, polish the ejector so it's shiny --you want to be able to see it. Then take a propane torch and set it to a VERY LOW FLAME TO ENSURE EVEN HEATING, and draw the metal back to blue. I recommend repeating this 2-3 times to ensure that any hard spots are drawn to blue. I only did it once with my AK, but I recommend 2-3 times. The receiver I worked on was for 7.62. The ejector was too short and the round with end up back in the receiver! It only happend 1 out of 90 rounds though. I don't know why the OHIO receivers have this problem. Maybe the ejector rail just isn't to spec and/or the top rails are not wide enough. |
| I did not sleep at a Holiday In last night but I THINK also that the top rail doesn't have the step down ( OOW ) and that can cause to Bolt Carrier to raise up alittle and loose even more contact with the fresh rnd in the mag. I could pull mine up and make it skip over the round. But thinning the selector plate raise up the rear of the mag and seemingly cured the problem. I fired about 200 more rounds through it and put her in the safe. I finally bought a NDS-2 receiver and sent it off last week to be swapped over . I can't stand the OOW. Sorry but thats me. I have no confidence in the rifle till I get that troublesome receiver off. I have heard nothing but great things about the NDS series. Good luck to you, WarDawg |
AK Sponsor