Thanks...
Have a 16.5-inch barreled Marlin M336 in .30-30 on which I replaced the "Youth" buttstock with a full-sized buttstock. It has a 5-shot magazine, and one in the chamber with the safety button engaged makes it a pretty handy car gun. I've carried it for a long time, just wasn't sure about the extractor spring constantly being under stress.
Appreciate your help.