The Safety Prime model with white and black triggers was discontinued in 2017, and the supply parts for this tool are limited. Unfortunately the U-shaped Return Spring is no longer available.
https://leeprecision.com/parts/reloading-presses/priming-tools/sfty-prmr-feed-lg-sm-parts/ If the part you are looking for is not pictured, you may take advantage of our Lee Lifetime Guarantee, upgrade to the new style Safety Prime for 1/2 the current retail price plus shipping. Fill out a return form and send in your Safety Prime to take advantage of this offer.
http://leeprecision.com/cgi-data/instruct/returnform.pdf
