Spring loaded Ball bearing screw for WGP Autococker bolts. These do not have a plastic locking pieces so you would likely want to use some other means to retain the pin. These fit AKA Lightning bolts, OTP bolts, and other WGP bolts. If your bolt is threaded, you can add one of these screws and you will not need to use a push pin bolt retaining pin any longer. You can use a pin that will just snap into the center of the bear.
Find screw in BB retainers with the plastic retaining pin at:
http://www.baccipaintball.com/aut1884.html
