Gun Pickup and Muzzle Flash in Sequencer

Hello Everyone,
I’m new to Unreal Engine and animation as a whole, but In the last 3months have been learning Unreal and right now working on a short film, (Not Gaming)
but I need help on how to have my Character pickup a Gun and fire the gun and showing the gun muzzle in Sequencer, tried everything I know but can’t figure this out

if you animated it all in a different program
if it lined up there
it should line up in engine

otherwise you can parent an object in sequencer with an attach track,
muzzle flash you’d have to look particles and activate them with trigger probably