Brand new. Features Include: Offers improved compression and feeding compared to OEM buckings Compatible with common hop-up upgrades such as flat hops and R-hops Smooth-bore design removes the need for potentially damaging modifications to install Retains the indexing ridge that assists with easy installations Includes cylindrical spacer nubs Based from the widely popular Blue Bucking Manufacturer: EMG Specifications: Material: Rubber Package Includes: 1x Buckings, 2x Spacers Check my page to see if there is anything else you need! I will accept reasonable offers I will combine shipping on multiple orders when possible