The Extended Rubber ButtPad, 0, 55 comes standard with the CTR and MOE CommercialSpec stocks and utilizes a firm rubber that is designed for enhanced shoulder purchase and improved impactdrop mitigation, May also be used with the MilSpec models as well as all STR , ACSL , ACS and UBR stocks for 0, 25 increased lengthofpull, All mounting hardware included, Note: This will not provide any extra recoil cushioning as the rubber is the same thickness as our standard Rubber ButtPad, 0, 30, Color: Black, Made in USA, SKU: TCLGR1587