I've been looking for the same thing. Good luck finding one with external hammers. There is an imported one (Chinese made, can't recall the name), but it doesn't exactly scream quality. Also, be careful that the external hammers are actually functional. I saw one that had hammers but was still internally striker fired. The hammers were not functional. Let me know if you find something that fits the bill. Try Whitetail Outfitters in Riner. They're very helpful.