shoot the heck out of it
I've had my HK 45 full size for 8 years, no problems, slide finish is still great
like Ex said, practice with the mag release a bit, after a few times you'll see its very well placed
I purchased a Hogue rubber grip for mine, it was already pretty easy to handle, but it made follow up shots dead on, even easier to handle
Some people will disagree with me and flame the ProMags, but I've bought 6 of the 12 rounders and they have performed without a flaw, to each his own
when I carry my HK concealed I use a Predator Kydex IWB holster