The Traditions 1851 Navy Spare Cylinder is a factory replacement spare part for the Pietta 1851 Navy revolver. This spare cylinder helps save time at the range by having extra cylinder prepared ahead of time. This solid steel cylinder is not a conversion cylinder. FeaturesSolid steel constructionSpare for the Pietta 44 Caliber NavyFactory replacement partNote This is not a conversion cylinder This cylinder is not engravedOnly compatible with Pietta 1851 revolvers