A key component of this patented shoulder system is its spider harness. All four points of the spider harness pivot independently and are connected by our unique clover shaped Flexalon swivel back plate, which is a Galco trademark. This results in a perfect fit and lasting comfort for all sizes and shapes. This system is constructed of premium saddle leather and includes holster, harness, ammo carrier and a set of system screws. The Miami Classic is fully modular. Fits Gun Model: Smith and Wesson N FR 29 4 inch. Smith and Wesson N FR 629 4 inch.