Home / Davinci Performance PCC / Parts / Accessories / Gen 2 RDBS Spare Small Spring Kit Gen 2 RDBS Spare Small Spring Kit$20.00 Internal springs for the Gen2 Roller-Delayed Buffer System. 5 weak and 5 stiff springs. Gen 2 RDBS Spare Small Spring Kit quantity Add to cart Categories: Scheel Spare Parts, Davinci Performance PCC / Parts / Accessories Related products 14.5in Pencil Profile 9mm Barrel $250.00 Add to cart Roller-Delayed Buffer System Gen 2 $350.00 Add to cart PCC Extractor Set Screw/Retainer Pin $12.00 Add to cart Buffer Only — Roller-Delayed Buffer System Gen 2 $250.00 Add to cart