EPES M249 CNC Hop Unit

May have either Black or orange ring sent Second Generation of the well known M249 Hop-up chamber - Fixed to Barrel with 4 Hex screws - Improved shape for hop rubber lips - 0.4 and 0.6mm spacer / bucking -Axis Seat spacers - Precise CNC production for perfect fitting - High-grade low friction and durable surface with hard penetrated by PTFE - Made From EN AW 7075-T6 High-grade Airsoft Aluminium