I have a question - I am seriously thinking about a Walther P22 and adding a Gemtech suppressor eventually. I have been looking at the new AR15 type .22 pistols and it seems to me that the P22 wouldbe far more useful 99% of the time. I want to mount the thing in a USGI rig behind my back on my M1941 or M1952 rucksack. My question is really 2 questions:

A.) What is the USGI suppressor used with this - Gemtech correct?

B.) Has anyone run Federal Automatch through one? Any ammo issues I should know about other than the early mags? Everytime I pick one up I think 'I need to buy one of these dammit.' The Ergonomics are perfect. Thought about a SIG mosquito as I already have a SIG, but I heard they have issues. Walther seems to do well with .22's...