That’d be the purpose for this thread.
Go to galleryofguns.com...
Type in 45ap for caliber. You can also specify semiauto or revolver for handguns.
Click yes only in stock.
Make a selection based on general price and style preference.
Search for the local FFLs that will handle the transaction and the discounted price based on distance you want to travel to pick it up. Choose one.
Complete the transaction by credit card and you technically own the gun.
It will then be sent immediately to the FFL dealer you chose and you then pay the final payment, taxes, and pass the background check in order to take possession of your gun.