No Sir~ Dimensional differences in the upper and lower receivers. In the case of the 15-22 it also has a polymer receiver not aluminum. But S&W changed dimensions to prevent that from happening as far as I know!
The Constitution is not an instrument for the Government to restrain the people. It is an instrument for the people to restrain the Government!
Today, we need a nation of Minutemen, citizens who are not only prepared to take arms, but citizens who regard the preservation of freedom as the basic purpose of their daily life and who are willing to consciously work and sacrifice for that freedom."
-- John F. Kennedy