Need some Maryland gun registration advice.

She who must not be named has informed me that post retirement we are moving near her family in maryland.

What is the impact on my firearm collection?

Mostly competition and SxS shotguns, several rifles and handguns as well as several "Assault Weapons"?

The Maryland State police website is pretty clear that the handguns require online registration; I not so clear about my semi auto rifles and high capacity mags.( HK SP5, M1A, PS90)

Any guidance would be appreciated.

Kind Regards,

Dave in Delaware