Pre-Ban is a US term for the Assault Weapons Ban of 1994 in which bayonet mounts, flash suppressors and pistol grips were deemed to be parts of an assault weapon and were deleted off most AR15's, AK47's and all other rifles deemed non sporting. The AR-15's imported into Canada during the 10 years that the Assault Weapon Ban lasted were Export/Law Enforcement Weapons which had all the evil features. My last 3 AR15's all were marked Export/Law Enforcement and had been made before the Assault Weapons Bill sunsetted in Sept. 2004 and had all the evil features such as 6 position stocks, really short threaded barrels and whatnot.