Yeah, they sell a semi-automatic version of the P90. Other than the fact that the barrel length has to be 16" to comply with federal law it is basically the same gun. As for legality... It depends on which state you live in. http://www.fnhusa.com/products/firearms/family.asp?fid=FNF009&gid=FNG006 The Brady law had to do with background checks and waiting periods. It has since been replaced with an updated system. I believe you mean the former assault weapons ban. That both is and isn't gone. It is technical but when you start understanding it you tend to realize how pointless a lot of the restrictions are.
hmm talking about real guns compared to soft airguns, then I really like the Tavor submachinegun they have made in Israel. That machinegun is an awesome fellow. It looks a very littlebit like the P90, but anyway here is a picture of the Tavor http://www.israeli-weapons.com/weapons/small_arms/tavor/Tavor.html That is a Smooth weapon.
