If memory serves me my 6.5x54 carbine had double triggers but additionally all the double trigger models I've seen also have a shotgun style trigger guard that inlets into the front of the pistol grip. It's not a very simple matter to change. Again if memory serves (this was over 30 years ago) most of the trigger asembly was attached to the bottom metal. They do look nice though with double triggers. Funny I prefer the RIFLE to have a single trigger though.