Originally Posted by Lanrezac
Oh, darn. I thought it was like the Colt "Lightning". I had just seen a picture of the cylinder-rear locking notches on one of those. Sorry, LogicalSon. I guess free advice is worth what you pay for it.
Here's a 1877 Colt Thunderer, 41 Caliber. The Colt being discussed in a much later production type.