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I purchased a set a few years ago . It says H3 18 . What does that mean ? The ones you have here says H3 11 , I need 2 sets in orange for my new PPQ. — 1 Answer

by Soup, from GA, United States Asked on July 3, 2022

Name Trijicon HD Walther P99/PPQ/PPQ M2 Heavy Duty Night Sight Set w/Front Outline (4.7)
$173.00 $144.49 Save 16%
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Answered by Hunter, Gear Expert, from OH, United States, on July 19, 2022

The Trijicon Walther P99/PPQ/PPQ M2 Heavy Duty Night Sight Set has those designations at the side for regulatory purposes. Tritium is a regulated material, so the designation on the side of the sights is to ensure the Tritium sights comply with the federal requirements. They designate manufacturing date and will vary between sights. So if you are currently using the Trijicon Walther P99/PPQ/PPQ M2 Heavy Duty Night Sight Set then these will be the same sights even though the number on the side will be different.

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