Not using your Mr. bullet feeder because its a pain to setup? Tired of time consuming caliber set up changes? Tired of bullets not flipping over correctly? With Mr. Bullet feeder optimization kit We have done the hard work for you! Simply Install our kit and you can now quickly change caliber settings in seconds! Not hours or days to get it dialed in just right! Just simply slip in one of our number spacers and your done! The kit come with a guide to advise you what spacer to use with what bullet. Comes with large knobs to make quick change much easier! Comes with new style ramps for piston and rifle bullets, so no need for ramp angle adjustments anymore! Adjust the angle of your feeder with our easy slip on jig. (This angle will give you a good starting point for most shaped bullets, some slight adjustment still maybe needed) Chose your angle guide jig for newer style Mr bullet feeder or older style. (Chose at checkout) Works with most all piston and rifle calibers / grains / and shape bullets. (email us if you have a odd bullet type, and will let you know if it will work for YOU) Patent Pending This listing is for the plastic parts kit, Bullet feeder NOT included.