I gather that the H2 buffer is now standard in military carbines. Was there also an update to the buffer spring?
Either way, what’s the current spring made of — stainless?
And if someone wanted a stainless spring with a little extra power, what options are available? If you want chrome-silicon, obviously Sprinco has it covered. Only thing I’ve found in stainless is Tubb’s flat-wire. JP maybe? (Their website seems to have no info as to material or strength).