I was pretty stoked when the dagger specific model was available, I had already bought the glock 19 cut model a few months previous and was hoping it would work on the glock 19 and the PSA Dagger, but for some reason it doesn't want to slide on to the dagger frame. I've seen a you tube video that was a bit short on details where some guy claims he was able to get the glock 19 model to work on the dagger, but doesn't bother to say what was involved.... I was going to investigate further but when the Dagger version came out for sale I bought the specific slide to avoid having to modify the G19 version.