I just bought a wingmaster 870 with a monte carlo stock that someone had traded in at a local pawn shop and the gun was unfired. I was able to get the guy to sell the gun without the cantilever barrel because I wanted to get a hastings barrel. I was wondering if there is a difference between the 20in. barrel and 24in. other than four inches and more weight. Also was wondering what years did remington have the wingmaster with the monte carlo stock and a cantilever barrel.