The Hornady Lock-N-Load Progressive Progressive Press Rifle Bullet Feeder Kit is sold as a complete unit for 22 caliber bullets, a conversion kit for 30 caliber bullets is also available, giving the reloader the versatility to load the two most popular calibers. Plus, it's compatible with other presses and uses the industry standard 7/8"-14 die threads. Coupled with the Lock-N-Load Case Feeder, you'll realize dramatic increases in efficiency and reloading speed, up to 50% faster! The Bullet Feeder Die is case activated; the bullet will only feed upon contact with the case. One station is used to feed, seat and crimp the bullet.