Check the listing for details. Low Primer Alarm Adapter For Hornady Automatic Priming System 2 PACK - PN 398318. Condition: New. Listed at 16.00 USD. For sale: Low Primer Alarm Adapter for Hornady Automatic Priming SystemUpgrade your Hornady Automatic Priming System with this adapter, which replaces the existing primer tube support cap (p/n 398318) and enables you to use the Dillon Primer System Early Warning Kit (p/n 20302) (NOT INCLUDED).Please note that this adapter has four feet instead of three and goes 1mm deeper into the primer tub housing than the stock part.The length of the Dillon Follower Rod may need to be shortened by approximately 1/4" or more to ensure proper functioning during installation.This adapter is compatible with the Lock-N-Load Auto Progressive Reloading Press and the Iron Press Auto Prime System and is designed to work with the following primer systems.Please be aware that the Dillon Primer System Early Warning Kit (p/n 20302) is not included in this listing.Please check my other listings for other Hornady products.