There's talk of HK releasing an SP5K and SP5 both with paddle mag release, shortly. I think there's a thread on it in the HK Talk section. Personally, if it's available, I'd prefer the real Mccoy.
But with the premium builders, you can get it built exactly how you want it, and usually outstanding service. I've read a lot that Ghilliebear (Parabellum Combat Systems) has superb service.
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