MDT Rubber Buttstock Dampeners SRS-X Elite Green. Simply apply some dry lube to the outer edge and press them into the buttstock openings. No need for tools or screws the MDT Rubber Dampeners will stay snug in place. Specifications for MDT Rubber SRS-X Elite Buttstock Dampeners: Manufacturer: MDT Gun Type: Rifle Fabric/Material: Rubber Package Contents: MDT Rubber SRS-X Elite Buttstock Dampeners MDT 107249-GRN: Rubber Buttstock Dampeners SRS-X Elite Green