Aaron, The cost and effort to make this optic ready is prohibitive. You can get same basic model with threaded barrel and optic ready with the PPQ M2 Q4 Tac model 2825929 UPC 723364212451 for bout $100 more which is less then it would cost you to set Navy model up for optics. Hope this helps.

anything can be done however its not practical to add a optic to this model You would need the RMR version here : waltherarms.com/handguns/ppq-q4-tac/#

Not easily Aaron. The slide does not have any provision nor is machined for an optics mount plate. You would need the RMR version here : waltherarms.com/handguns/ppq-q4-tac/#