I have had one for two seasons now. There is a very small screw that holds the spring and arrow holder on. It does have the tendency to loosen up over time. If your not careful and it falls out you will have a heck of a time trying to find it on the ground. Over the two years I have had to replace the screw three times. Fortunately it has fallen out while practicing at home. I learned to check it after every twenty shots or so. It it did fall out in the field, it would still be shootable but you would have to be carefull of the arrow falling off before you draw.