Got one a month ago. Can't use stock sights, so I put a red dot on it. Very surprised at how well it shoots. When I get a chance I'm going to try polishing the trigger. Good luck with it.
Mike I just smooth out any rough seams from the molding process. On plastic parts I mix a little molly paste with powdered graphite. There are some parts in there that are metal, and con be polished. My problem will be trying to take some of the travel out of the trigger.
I bought 3 of them when they first came out i want to keep one stock and mod one the third will stay in it's box. FT piston and valve will be one mod for sure. I'm going to try to make a brass trigger. Now i need to open her up. Mike