Colt Python Engraved 357 This legendary double action revolver features a 3" barrel made with modern stainless steel alloy along with a new rear sight and 30% more steel beneath the rear adjustable sight. This update provides you with a more robust shooting experience than ever before. Additionally a recessed target crown and new user-interchangeable front sight provide you with accuracy and customization not found before. The walnut grip with Colt medallions rounds out the list of features.