Hello all,    Been away for a very long time, picked up my first 11707 over a decade ago. I've still dropped in on the forums here every so often but between school, work and life stuff I kinda got out of the parts and industry scene. My M4 is still running strong after 1000s of rounds and very little cleaning and maint. Finally bought another. This puts me back in the market for another full length mag tube (and spring?). There are many more options now than there were 10+ years ago. I am