Go to the reference section and see Big Medicine's fix for hammer spur loosening. It's fast, easy and it works. I use it with all the hammer spurs on the newer guns.rattes said:I find that the hammer spurs nearly always loosen up and have to be re-tightened on every trip, and during the hunt. Ive even applied loctite and still wriggles off. I own 4 marlin levers and they all do it. Actually my 39A wouldnt even fit on properly . Lost one out in the bush a few months back now. I pulled them off now as It could be dangerous when de-cocking. JMHO.