AK Sponsor
Posted: 6/18/2005 10:15:05 AM EDT
|
what is with the x and y markings on my rec. ii was just wondering what they are for and if all of the receivers have them? the are located to the front of the side rail just above the mag release. i appologize if this is a stupid question |
| not all receivers have them........chinese receiver don't have them, and some of the US ones don't........as for the purpose, I'm in the group that believes it's more for strengthening of the area, then anything else. just like corrogated cardboard has more strength then non-corrogated carboard. |
|
the exact markings are: left side: wasr10 cal7.62x39 sn 1-5xxxx-03. right side: made by cn romarm sa/cugir in romania imported cai georgia,vt but it was my undertanding these kinds rifles came in kits that were assembled in the us? can you tell im a noob.  so do romainian receivers have theses xy markings ? to get back to the original question
|
|
The "x" and "y" stampings on the FCG pin holes of stamped receivers (and, incidentally, the "step" on the top rail of stamped receivers) are there to compensate for the difference in the thickness of stamped receivers versus milled receivers. A milled receiver has a thickness of 1.6 mm while the usual stamped AKM receiver is only 1 mm. The stamps (and the top rail steps) make the effective thickness 1.6 mm and so the FCG pins (and the bolt carriers) of both milled and stamped AK's are interchangeable. Stamped receivers with metal as thick as a milled AK, like those the Chinese and the Yugoslavians used, do not require these compensatory measures, and do not have them. |
those rifles came into the USA as single stack mag rifles, century arms hogs out the magwell and adds enough US parts to make it a legal double stack. no WASR10's were made on US receivers as far as I know. |
I have heard the same thing, and it seems that maybe it would be true, except the OOW receivers is nearly the same thickness as the european ones, and there is no X Y stampings on them, and no 'step" on the top rail, and the pins fit just fine in them as well as the carrier. |
|
Richard-ar15 is correct. On another note the oow reciever is a little thicker than 1m I think it is 1.24mm. The outer sides of the 1mm, 1.24 and the 1.6mm are the same, its on the inside that they are different, that is why the X and Y axis are pressed inward, and the top rail is stepped. If you add the depth of the pressed X and Y axis (.6mm) and the 1mm reciever you come up with 1.6mm, same as a milled reciever. |
|
It's my understanding that OOW receivers are 1.2 mm thick. This may be enough for it to work without the stampings, but it's still just an out of spec, inferior receiver. If it doesn't have the proper steps on the upper rails, then the bolt carrier will have too much play in it. I didn't say that thin stamped receivers won't operate without the stamps and the steps. I said that the designers of the AKM put them in to make it work as good as the milled AK's with as much interchageability as possible. ETA- Oops, nsabjg, posted at the same time- |
AK Sponsor