I have an extra charging handle with no latch and an extra grip screw key. The key came with a magpul grip kit and has the ball type end so you don't have to insert it perfectly straight. I spilled some alumiblack on it and it's tarnished. I'll ship in an envelope for $0.
The charging handle has no latch at the moment but it will as soon as I find a big latch for my existing CH. Wait, are you looking for a carry handle?