I just got my Bond Arms Ranger on Friday and took it out to the range on Sunday. It has a 4 1/4" barrel and shoots .45/.410. What a great little pistol. It is built like no other handgun I have. Great feel and great looks. Others have said that the trigger pull is terrible, but if you pull the trigger as the directions state it is very easy and smooth. This little gun is very accurate too. At 25' using .45 long colt I put 6 shots in a 8" circle. Not bad for a derringer. Can't wait to get some other caliber barrels for it.