G3 SG1
externals:
First Factory MSG90 front end conversion
G&G Armaments MSG90 stock
Highrise Scope mount
3-9x illuminated scope
internals:
Re-inforced gearbox
Systema Silent piston head
Systema reinforced cylinder head
bore up set
Metal bushings
M150 Spring
Shims
Helical Super torque up gears
Gaurder piston
PSG-1 Titanium Barrel
Gaurder tappet plate
Marui Highcap
EG-1000 Motor