JP Enterprises SCS Buffer Retainer Pin and Spring Silent Captured Spring A Easy Installation and Removal A AR-15 A JPSCS-BRP The JP Enterprises SCS Buffer Retainer Pin and Spring is a redesigned buffer retainer specifically for use with the JP Silent Captured Spring. Standard buffer retainer pins make SCS installation and removal difficult and require storing the SCS loose. This redesigned pin allows easy SCS installation and removal while ensuring secure retention-the SCS will not drop unexpectedly from the lower receiver. SKU: JPSCS-BRP. Note compatibility before ordering - see compatibility section below. Easy SCS Installation and Removal Redesigned geometry allows the Silent Captured Spring to be installed and removed easily while maintaining secure retention in the lower receiver during use. Compatibility Compatible with JP Silent Captured Spring and conventional AR-15 buffer tubes. Not compatible with VMOS (Variable Mass Operating System) carriers-same limitation as standard mil-spec buffer retainer pins. Not compatible with buffer tubes that have a slotted lip feature designed to extend around the buffer retainer pin-the slotted feature may prevent the pin from fully presenting and will not retain the SCS. Not designed to retain a standard buffer assembly as reliably as a mil-spec buffer retainer. Specifications: Manufacturer: JP Enterprises Model: SCS Buffer Retainer Pin and Spring SKU: JPSCS-BRP Designed For: JP Silent Captured Spring Compatible Buffer Tubes: Conventional (Standard) Incompatible: VMOS Carriers, Slotted Lip Buffer Tubes Note: Will not retain standard buffer assembly as reliably as mil-spec buffer retainer Included: Buffer Retainer Pin, Buffer Retainer Spring