FAST hopup for Silverback SRS-A1 (Field Adjustment SeTting Hopup). 6061 aluminium CNC machining hopup unit for the Silverback SRS-A1. This new design allows you to adjust your hopup in-game without any tool, in just few seconds. This hopup utilizes standard AEG hopup rubbers and AEG barrels. Packaging includes: - CNC...

Twisted Bolt Knob CNC AL 6061 T6  with hard black anodized finish M8x1.25 thread. 39 Grams