I'm fairly new to firearms so im learning new things as I go. Being a little naive, there is a certain level of trust you put in those with years more experience. Last week I went shopping for a summer EDC. Local shop showed me a used Walther PPS. It had everything I needed for caliber and size. So I purchased it. I get home and research the pistol and look for a holster. I noticed the pistol had all the features of the M2. Not seeing anywhere that the M2 is mass compliant as of yet. Maybe all generations are but I know Mass is picky with model numbers. Just wondering what my next step is. Return for credit?