Bought some speed loaders for my M28-2 and M57. I had to get HKS, would have preferred Safariland Comp 2's, but not made for the M57, and out of stock for the M28. The HKS is nicely made, but the Comp 2's I have for my M19-3 work better at dropping the rounds when the release snaps. All you have to do is push the Comp 2's, where you have to turn the knob on the HKS. Still better than single loading.