All CHPWS V3 plates are 100% Made In America, using only American Made Material, by Americans. Each V3 plate is fabricated from 6061 precipitation-hardened aluminum alloy and then finished withType III Black hardcoat anodize per MIL-Spec-A-8625
226 and 320 models vary in depth of cut. Measure from the top of your slide down into the cut to see whether it is .180 or .130 Thick. Then choose the proper plate from the drop down menu.