Best spring by far - Geissele Super 42 Rifle Length Spring

Put in an AR that runs hard and literally kills springs, after replacing the buffer spring a few times and having same result of working perfectly first time out shooting then all the sudden running super slow as the spring is dying. Decided to try the Geissele and went the extra mile of converting the buffer to rifle length with a BCM Mod 2 buffer tube and BCM T series buffer. Now it’s flawless have not had any problems since. If you are running a binary, FRT trigger or especially FA this spring is a must have. I actually purchased a back up Super 42 rifle length spring just in case but don’t think at this point I will ever need to use it. Geissele builds their parts like a tank. Could not be any happier!