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5/23/2026 1:45:30 PM EDT
Heya, wanted to get some opinions here from you all. Just picked up a Century RPK with a D.C Industries receiver and looking it over once I got home and field stripped it noticed some damage to the right rear of the bolt carrier. Normally my take on AKs is rifle is fine but this is a little more than the usual quirks. Bolt locks up tight still and easily goes into battery and it doesn't look like the damage is in a super important part of the bolt but figured I'd ask everyone's opinion.

5/23/2026 2:17:50 PM EDT
[Last Edit: M4BlackRifle][Edited] [#1]
Is it damage, or was the bolt ground to fit?

5/23/2026 2:23:41 PM EDT
[#2]
Looking at the other side there's some of the same type of "damage" so I'm thinking it was done to make it fit/work
5/23/2026 2:38:00 PM EDT
[Last Edit: M4BlackRifle][Edited] [#3]
I have two Century/DC Ind M70AB2 and both have some roughness in the area that was ground on yours.    

The ground area looks like sharp corners were chamfered, so I would rule out fresh breakage, and lean towards grinding to fit.
5/23/2026 3:05:52 PM EDT
[#4]
Thanks, that makes sense. I hadn't seen it yet on my other AK platform rifles so it kinda caught me off guard.
5/23/2026 7:16:25 PM EDT
[#5]
It looks like something you would do to force fit a carrier if the rear rails of the receiver were improperly trimmed/stamped,  leaving a channel that was too short for a normal carrier to fit.

There is normally an angled grind on the carrier rails in this area which serve to pull the carrier down onto the receiver rails so that it doesn't get stuck at its full rear most position  - but it looks nothing like the one in your picture.

5/23/2026 7:38:40 PM EDT
[Last Edit: M4BlackRifle][Edited] [#6]
Mine looks like this.  

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