Here are all those critical little parts that seem to go missing when you're working on your rifle - the ones that pop out of sight under the bench, into your tool drawer - you know what we mean. Included in the "Most Wanted Kit are four sets of pivot pin detents and pivot pin detent springs, and 2 each of safety detents and detent springs, firing pin retaining pins, buffer detents and detent springs, and extractor springs, spring inserts and O-Rings. With this Kit, you ll never be troubled by the loss of "Most Wanted Parts again.