Originally Posted by The_Real_Hawkeye
Originally Posted by chlinstructor

CDNN Sports has some of the Ultralite or scandium type versions in stock, but they’re about twice the price of the aluminum frame versions.

The reason for that is that the scandium models have titanium cylinders, which require more expensive machining than steel.
Only the PD's. The M&P's have a black stainless cylinder, which I actually liked better.