I have several Stag Arms rifles. I typically shoot around 100 rounds when I take them out. I have never had a single malfunction.
They have the blue extractor plastic buffers. I am told they should be black. Others say they should also have an enhanced spring and maybe even a “Defender” or an O ring.
Do I leave the rifles alone? Or, do I fix something that is working fine?
P.S. About 3 years ago, I bought a extra power spring, black insert, and crane o ring kit. I tried to install it. There was no way the o ring would fit. It was humanly impossible. The spring fit. But, I had to use pliers to get the retaining pin in. It seemed like a possible unintended consequence would be more stress on the pin. I just put the old parts back in without shooting it.
I made the assembly and disassembly of my bolt require tools.
I would go to GandRTactical.com and get the 3 pack of the BCM enhanced extractor spring kit for $12.00 and do all of them. Even if they came with the right parts, springs and rubber break down over time and it is a fine idea to go ahead and replace these very cheap wear parts every year any ways.
I put Grants extractor kit on my Stag Model 1 and yes, I used needle nose pliers to remove the OEM spring and to install the new spring, it is tight, but it was just as tight on another gun that I have from another manufacturer. Don’t be scared, it will work just fine. The initial tightness when putting the pivot pin back in will decrease after a little use, that is because of the fresh rubber and tight spring. Soon the rubber gives up a bit of its pressure and things are fine.
I also do not remove the extractor to clean until a couple thousand rounds have been through, if your shooting 100 rounds and doing a detail breakdown, your overkilling it big time. Your free to do that, but it is not needed.