The Replacement Pistol Parts Kit contains color case-hardened hammer and trigger, main spring, hand with hand spring, cylinder stop and trigger/bolt stop spring. Kit fits the 1851, 1860 and 1861 Colt (1/2 frame) pattern pistols in .36 or .44 caliber. Will not fit Walker model pistols.
The parts came quickly, and they are very high quality. After checking all over the internet, I came to the conclusion that Cabela's has the best price.
The hand with spring and the bolt might require some hand fitting to get the timing just right and its hard to find a gunsmith who works on black powder firearms so make any adjustments in small increments to avoid a re-order.