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contact Truglo and ask them http://www.truglo.com/contact_us.asp
B. F, the PPQ sights won't work. The PPQ SC deviated from the original PPQ in some important ways.....one being the rear sight retention/adjustment. The SC's windage adjustment screw has a round head with a hole for an allen wrench. The round head fits into a slot in the slide (where the spring and plunger used to be). Walther has confirmed that the SC takes PPS style sights. https://www.budsgunshop.com/catalog/product_info.php/products_id/713080012/truglo+sight+set+walther+pps ----- Walther Customer Service can be contacted to confirm at 479-242-8500 EXT. 507