The DoubleStar Ace Recoil Pad is a 1" thick, over-molded rubber recoil pad designed to fit Ace AR-15 stocks. The Recoil pad comes with all needed mounting hardware which makes replacing the old recoil pad extremely easy. The Recoil Pad is constructed from hard rubber/plastic designed for long term use. The Buttstock will only fit ACE AR-15 buttstocks.FeaturesAll mounting hardware includedHigh Quality ConstructionPrecision Machined Hard Rubber/Polymer 1" Thick for comfortable padding