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Expert Answer
Yes, this product is compatible with the Springfield XD45 5" Tactical.''
As far as where you can purchase a suppressor, there are many, many manufacturers - a Google search of ".45 ACP suppressors" would be a good start, unfortunately, we do not sell suppressors.
One popularmanufacturer is Silencerco, they have an excellent buying guide here: https://silencerco.com/suppressed/
Mark H.