It has a manual priming system,
https://leeprecision.com/safety-primer-feed-small-and-large.html

As for the way the system works, you use the safety primer to load a primer into the cup isntead.

Hence will work like this below, but on the on the auto breach press instead.  
And yes, you have to push the pacman every top of stroke to load a primer into the primer ram cup each time, so it not like the pro or loadmaster system that will auto load the primer in the primer ram on it's own.
https://youtu.be/YwqOpknjsZI

Not sold as a progressive press, but as the world fastest single stage press instead.

Go to the third video on this page if you don't believe me,

https://leeprecision.com/auto-breech-lock-pro.html

The lee bullet feeder can be made to work right, and why it does not come with a weight is beyond me.

From the start, you want debur/clean, and then grease all the part of the bullet feeder.  Hence as the lever is pulling the split finger piece forward in assembly via the lever rod, you don't want any kind of binding there, or on the hex shaft to the assembly.

Now the weight part, as the lever rod is pulling the lower split finger part forward, all the lower plastic parts (including the U body section) all the way down on the hex shaft until it gets the bullet to the center of the die, then it can cam the lower plastic parts/bullet upwards next.



So what you do is make a block chunk of lead that will fit in the back U slot that is center milled so the top of bolt does not bind up on the lead block.  Also, the back of block has a channel to fit on the back end of us slot to hold it in place.    This keep the lower plastic sections all the down as the bullet is being feed to the center of the die, then the lever at the last moment will pull the entire lower section/bullet  up on the hex shaft to center the bullet in the die.

Hence without the added weight on the plastic pieces, the lower section/bullet feed slip piece will rise up to drag the bullet on the bottom of the tool head before it gets to the center of the die, and this causes problems with the bullet square to the die/ or the bullet just knocked off the slip bullet holder isntead.

I don't have one of the lead blocks handy, but will post a photo of one the next time I make one for one the lads when mod'g a machine for them. Also to point out, this block is used with the feed return spring in play as well, which help to keep the lower section down even with light weight bullets in play until the bullet has reached the center of the die before it being lifted upwards.

https://leeprecision.net/support/index.php?/Knowledgebase/Article/View/290/22/bullet-feed-return-spring-attachment


As for the split bullet feed piece, it plastic, so does have a limited life over all; but cheap enough that if you do have to buy a few spares to keep on hand, not the end of the world.

Is it as good as a Mr bullet feeder die (or even mod'd Hornady bullet feeder), not by a long shot, but if you are on say a machine that you don't have an extra station to add in a bullet  feeder die, then it can be made to work on the lee machines.

Trust be told, I could mod the machine to take a lee pro-1000 priming system in about a half hour, or just take an extra 20 mins to just mod it to take a tube type primer system instead.

But that is not what the machine is all about, but instead as stated, a fast single stage press isntead.

Let us know how the new one works.