The road block shotgun you may be referring to is the Mossberg 500 "Road Blocker". It's a tactical use Mossberg released in 2009. Google "Mossberg Road Blocker".
If you have a Model 30 pump shotgun, the barrel is not intended to be removed by the user. To do so requires specialized tools such as a receiver block and a barrel wrench. You can clean and lube the shotgun with the barrel attached to the receiver. Contact Savage Arms Customer Service and get an owner's manual for your shotgun.
A shotgun barrel with a cylinder bore choke.
yes a rifled shotgun barrel or smooth shotgun barrel
Buy Shotgun. Buy Shotgun.
when did the make the smithsonian double barrel shotgun
What is the value of a Beebe arms double barrel shotgun?
One difference is that the inside of a shotgun barrel is smooth and the inside of a rifle barrel is what they call "fluted" which puts rotation on the bullet as it moves though the barrel.
I do not personally, but yes, there is a single shot rifle that can have the rifle barrel replaced with a shotgun barrel.
Yes, you can remove the barrel of a model 66 Shotgun!
A barrel with a full choke.