???? The road blocker was the police version??? of the Ithaca MAG-10 designed to give law enforcement the ability to deal effectively with criminals in vehicles on road blocks. It is very heavy (around 11.5 lbs loaded weight), has a 21" barrel fixed cylinder choke, 2+1 capacity, and is not intended for routine carry. It had a tough parkerized?? black finish and a stainless steel gas recoil system. Cops did not like it due to the weight and the small ammunition capacity of 2+1 since it also incorporates a "countercoil" system which substantially reduces what would otherwise be an extreme recoil. They are very rare now and collector pieces selling anywhere from $1500 to $2500. I only remember ever seeing two in all my years but it was so nice to hear the name again, must be 25 years since I have heard anyone refer to them.