Airsoft Gun 400 FPS Club

Check out these trophies from the airsoft gun 400 FPS club. Yep cracked mechboxes mostly version 2 but version 3 mechboxes crack about the same way and in the same place. Sometimes one will completely crack the nose off the gearbox. How can you Avoid this?

Keep your mechbox shooting below 350 FPS. If you must go to 400 then start with a reinforced type mechbox and put in a bore up or silent type piston head and cylinder upgrade. This will help absorb some of the shock created by the spring and piston. Also be prepared to have frequent maintenance and repairs for any airsoft gun upgraded beyond about 380 fps.

Building airsoft guns that shoot over 400 fps on full auto can be allot of fun. Just keep in mind that joining the 400 FPS club will quickly build you a trophy pile of worn out airsoft gun replacement parts.