Know-It-All JG M4s Project part 1 Troubleshooting
These are the parts that are needed, either broken missing or damaged
Broken Gear Box --- http://www.evike.com/product_info.php?cPath=24_68_518&products_id=24814
Broken Hop Up --- http://www.evike.com/product_info.php?cPath=24_71_371&products_id=37220
Missing Flash Suppresor --- http://www.evike.com/product_info.php?cPath=25_87&products_id=24722
Damaged Butt Stock --- http://www.evike.com/product_info.php?cPath=25_113_541&products_id=27240
Missing Rear Sight
Broken Bevel Gear --- http://www.evike.com/product_info.php?cPath=24_363&products_id=24865&osCsid=46c28fb410d9bfa4ff2c1150d5e8ea8e
Recomended Upgrades
New M120 Spring or Heavier m130 for more FPS
New Piston with Steel teeth
tight bore barrel for more accuracy and FPS comes with 6.08 go to 6.03?
Instead of Getting a Gear Box and spring and piston and bevel gear which might cost up to 70+ another option would be a NEW UPGRADED Premade Complete Gear box maybe 55 or so....