COWCOW G17 Blow Back Unit

G17 Blow Back UnitHighlighted features6061 Aluminum material with CNC machinedUltra lightweight designDurable construction prevents flexing and warping under hard useProvide stable and smooth blowback cyclingPerfect Fit with COWCOW CCT-TMHC-054 piston head and CCT-TMG-042 & 043 loading nozzleCompatible with TM original piston headAvailable in silver & blackFor TM G17*PS: Please note: installing parts / assemble /fitting airsoft gun will need intermediate knowledge; for expert or airsoft gunsmith. Please refer to your airsoft gunsmith for proper installation / fitting. Fitting may be needed as the condition of each airsoft gun might be different. Regular maintenance is needed for all airsoft guns in order to keep it in good working condition and reduce wear out issue on parts. The actual performance is based on the overall setting on your airsoft gun. Please consult your airsoft gunsmith for advising. Strong Screw glue is needed for installation. Use a drop of screw glue when in