Hi Coburn, Yep that is a great pistol (i Have two) as for flat heads they are fiddly at first but you will soon get used to it, as for the chamber I put a couple of drops of Pellgunoil on the pistol close it and dry fire then stand it on it's end overnight so the oil runs down to the seal. I do this every 3-4 months.
Hope this Helps
Jason
PS If you want some practise with your new HW40 why not join the UBC and enter our competitions.
www.umarexboysclub.co.uk or Click here for BBS link