I have two ARs that I bought when I definitely didn’t know what I didn’t know. One is a Ruger AR556 with Magpul furniture, an Arisaka light, a Holosun dot, and 3400 problem-free rounds through it. The other is a freefloated Stag upper on an 80% lower (yeah, I really didn’t know) with a Sig dot, Streamllight HL-X, and 1500 problem-free rounds through it. Both have Geissele G2S triggers, go figure. If I could snap my fingers and turn both of these into one Colt/SOLGW/BCM I would. But even aside from being unable to sell an 80% lower, I could never get the money for a decent new rifle out of these, at least not in the current market. And I definitely don’t have new rifle money otherwise – for now, I have to make the best of what I have. I’m currently using the Ruger as my HD long gun option, and it’s set up exactly as a KISS Colt would be for HD, except it’s not a Colt. I actually prefer it to the Stag ergonomically, so a used or new old stock 6920/6720 is high on my list of future options.
Question is – is it worthwhile to get some chamber gauges to check headspacing and, assuming it’s fine, swap the better staked, shrouded firing pin Stag BCG into the rifle I’m actually using to replace the barely “staked,” exposed firing pin BCG that Ruger uses? Or do I just leave everything as-is until I can buy the better rifle (possibly with an Aimpoint PRO purchase between now and then)? I guess the specific question is, if I have 3400 rounds on a sub-par BCG and it’s been fine, does that mean it will likely continue to be fine or that failure is just growing more likely?
Granted, I am more likely than not just overthinking things to make up for the fact that the correct solution is currently outside my reach.
I’m also open to any better ideas, even if it’s just “shoot your guns and shut up.”
P.S. First post but I’ve been lurking for a while, this forum is a huge part of how I learned what I didn’t know in the first place.