I am a newbie here, but a "veteran" pistol shooter. Spent 4 years in the Army, and have loved shooting pistols since 1999. I have owned: Makarov, Walther P99, Taurus PT92, Kahr P9, SIG P239 SAS and HK USPC. I recently picked up an HK USP compact in .40. Nothing really "wrong" with the pistol, I just don't enjoy shooting it like I LOVE shooting my SIG P239 SAS in .40/.357 (gotta love the barrel swap!). I have spent about 2 years looking at the Steyr pistols, and am considering trading this HK for one. I have a few reservations though...how is parts availability? Is this pistol (MA1) running flawlessly yet? I remember hearing about quite a few hickups, and I can't have that in a self defense gun! Can the .40 and .357 swap barrels? How is the size compared to the P239? I was actually suprised at how thin the HK is...I've got "baby" hands and thin is in for me. Finally, how is quality compared to the HK? Any suggestions?