[quote=Peik]
Late 1500's-early 1600's is for the best mix of them. Mostly matchlocks and early flintlocks, full-plate still exists but will reach an end and so on. And yes, cuirassiers were held for quite some time. Also, to be honest, plated mail armor was used quite extensively in both the Safavids, Mughals and Ottomans even during Napoleonic times (the Ottomans got rid of it by the time of Mahmud II with his army reforms afaik). I just wanted to point out that mail and plate wouldn't be very bulletproof compared to full plate.
[/quote]

Yes, then this time period would be the perfect fit for plate wearers even with matchlock firearms. The Sassanids did not wear full plate, which did place restrictions on user protection. Thankfully, this is not the entirely the case for some Sarifen armies and brings a slew of possibilities for our story. 8)