EMG Atlas Hopup Bucking (60°) AEG Hopup and Units 20mm Top Rail for Mounting

20mm Top Rail for Mounting optics and accessories

as well as extra grip lines on the front to help with weapon manipulation

•    Ambidextrous design

The MG4 comes with an adjustable hop-up for enhanced accuracy when the included flip-up sight or an optical system is mounted on the Picatinny rail

EMG Atlas Hopup Bucking (60°) AEG Hopup and Units 20mm Top Rail for MountingFeatures 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: 2x Buckings, 2x