I have a stainless steel guide rod, it's labeled P225 but could also be P226 because of a penciled in label. I don't have either gun, so I can't compare.

Can someone provide measurements for each? Eyeballing it, I'd say its a P226, but without a reference it's hard to say.

P225 2.75"
P226 3.25"

Thank you! It is as I suspected, P226 stainless guide rod.

Pretty sure it's a Steve Bedair Stainless Guide Rod.