Ok, never owned, used, nor shot an AR before, though I am well versed and accomplished with other guns. I just bought a PSA PA308. I bought an assembled upper in 308 A2 style, and a bit later an assembled lower, also in A2 flavor. (Hey, I like the nostalgic look.)
When disassembling the rifle for the initial cleaning, lubrication, and inspection, I of course disassembled the bolt carrier, but not the extractor parts. The cam pin was a little fidgety to get out, as expected from my studies, but it did finally come out with no force required.
Now, my understanding is that you install the cam pin with the flat aligned with the gas key, (of course), and then rotate it 90 degrees so that the flats of the pin are crossways to the bolt, and the cam pin could not try to come out, nor become jammed.
Therein lies my problem and question.... on mine, if I rotate the cam pin 90 degrees, then the firing pin won't go back in. The ONLY way the firing pin will go back into place is if the flats of the cam pin stay oriented fore and aft, as you place them for disassembly.
Is my cam pin bored wrong for the firing pin, or am I missing something here?
Thanks a bunch for any help,
Vettepilot