That event happened on the weekend of my birthday. I had an awesome time, lots of amazing pictures were taken but I don't want to flood my DA with them.
That day, I was sporting my armor with some light "battle damage" and wear, but it was only acrylic paint that comes right off for those "formal" troops The gun is the Stormtrooper sidearm, the SE-14r.
I have an official page for everything 501st related: