Retro Arms CNC Aluminum Rotary Hop-up Unit for V2 M4 AEG
Was $37.99
SAVE 26%
$27.99
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Features Rotary design allows for precise and easy adjustment R-hop "TDC" top down center nub / arm + standard hop-up arm included CNC machined aluminum BB retention with O-ring (optional) Threaded collet nut to eliminate barrel torsion and vibration
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Price History
$27.99
(-$10)