Single-spring mechanism allows for a smooth"" light trigger pull. Triple-locking cylinder is locked into the frame at the front"" rear and bottom for more positive alignment and dependable operation shot after shot. Easy sighting with readily replaceable"" insert front blade sight and adjustable rear sight with white outline. Rugged stainless steel construction with no side plates"" is designed specifically to handle powerful magnum loads through extra metal in top strap"" sidewalls and barrel mounting areas. Patented transfer bar mechanism provides an unparalleled measure of security against accidental discharge. Dual chambering for .44 Magnum models"" which also accept factory .44 Special cartridges.