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and quick change spring system
The Mil-Spec springs are color coded for better identifying them when switching out the spring for different skirmishes
increasing the service life of the gearbox and its parts
It can be used as a tracer unit
flip-up front and rear sights
NexxSpeed CNC Aluminum Blowback Unit Set Black Edition - Tokyo Marui Hi-CAPA 4.3 / 5.1 BATTERIES and quick change spring systemThe CNC 7075 Aluminum Blowback Unit is machined with precise CNC tolerances from 7075 Aluminum for improvements in stability, durability and overall performance. It is designed with a plastic inside to reduce wear on the nozzle. And there is a plastic insert with the appropriate angle so the hammer never gets caught in the BBU. Optimized weight only 14. 38 grams. Adjustable BBU for turning standard BBU to early air cut off BBU. The nozzle head is made