Quote from: JFrisbee on April 04, 2026, 05:14:39 PM

That's not the bolt. That's the bolt carrier. The bolt is the lower part that rides beneath the carrier. Both at made of very hard, tempered, carbon steel.






From yooper's site:






If it's caused by the carrier recoil, it's not causing any harm.

Quote from: Boris Badinov on April 04, 2026, 03:57:05 PMIts common trait seen on receivers with the right angle corners.

Scroll down to the Early vs Late receivers section at the weebly link below. Early receivers have scalloped corners and the marks are not present. Later receivers have 90° corners and the marks are present. Possibly they are from recoil, and not from intial milling but you'll find those marks on receivers with the right angled corner cuts.  But they are nothing to be concerned with.


https://chinesesks.weebly.com/component-variations.html


Is the bolt even wide enough to make those marks?

Yes, they match up.  not sure why yet.

Real late to the game here but I have this version - 1989 molested in 1990.

Its common trait seen on receivers with the right angle corners.

Scroll down to the Early vs Late receivers section at the weebly link below. Early receivers have scalloped corners and the marks are not present. Later receivers have 90° corners and the marks are present. Possibly they are from recoil, and not from intial milling but you'll find those marks on receivers with the right angled corner cuts.  But they are nothing to be concerned with.


https://chinesesks.weebly.com/component-variations.html


Is the bolt even wide enough to make those marks?

I don't know that I'd say those are machining marks Boris. I've not seen those on other receivers in the past. I'd say they are clearly from some type of impact which the OP probably needs to get to the bottom of.

OP, what's the rear underside of the bolt carrier look like?  That's the only component that is even possible to hit the inside of a receiver on the rear wall like that. Perhaps it was fired with out a recoil spring?  But Boris is correct in that I'd also expect the receiver cover to take the brunt of damage. (This is where those stupid after market rubber recoil buffers go in fact, between the carrier and the receiver cover.)

Maybe post some photos of the various innards and we can piece together what happened.

The bolt doesn't travel far enough to impact the rear of the receiver well. Any impact from recoil occurs between the rear of the carrier and rear wall of the receiver cover. The two marks you see are from the original milling procedure. Early rifles don't have the two marks, later production rifles do.

Quote from: Greatguns on April 03, 2026, 12:03:19 PMSo, I did not buy that stock for the Romanian. Instead I picked up a plastic stock for my bubba'd Chinese that I am setting up for hunting. I then took the OEM wood stock off of it and am using it on the Romanian. It is an unnumbered, threaded action stock with blade cutout, but the bayonet slot was filled in. I poked around at it and realized it would come out easily and clean. Fits well and I just need to find a matching HG for it, which I am hoping to work out a trade with echo1 on. Here's a quick pic of it

I got an HG that will match    PAX

During my clean up and inspection of my 2nd SKS, I found Two Impacts at the of Rear Receiver, I'm not exactly sure what made these, however, I am thinking impacts from the bolt slamming into the receiver. Has anyone observed similar impacts on theirs? And, if it is caused by the bolt, is there an issue with this rifle? I am really new to the SKS and need to learn a ton more. Thank you.

Quote from: Phosphorus32 on April 03, 2026, 09:40:23 PMWelcome!

The portions of the rifles shown in the pictures indicate that you picked up a couple of nice ones!

Greatguns has you covered on the years and the most likely reason for the Russian magazine.

Thank you!  I am having difficulty posting some questions I have in the Unaltered SKS Rifles as I keep getting an error.  I guess I have to learn how to post better here LOL.  The 1989 one was refurbished by a bubba it seems, there is black paint runs everywhere and I found a lot of rust underneath, so I will do some clean up and re blue.  I will be getting a few more of these in the future as well.  Take care!