Sporting Goods 
Pet Supplies 
Here is an unused, unfired CVA Colorado MM barrel. Sorry to say I don't know what the "MM" stands for. It is factory blued with a shiny bore. It is drilled and taped for a scope. The front and rear sights are held in place with a dove tail.
| Barrel Size | Diameter .933 |
|---|---|
| Barrel length | 26" |
| Brand | CVA Connecticut Valley Arms |
| Breech Style | Button |
| Caliber | 54 |
| Country/Region of Manufacture | Spain |
| Custom Bundle | No |
| Gun Type | Rifle |
| Load Type | Muzzleloader |
| Modified Item | No |
| Rate of twist | 132 |
| Type | Percussion Barrel |
| Vintage | Yes |
