yeah. im not convinced that metal pistons worth 20 bucks it worth risking a helical gear set worth 60 i like the idea that you have a manufactured weak point that is cheap and easily replaceable, and i really dont see why swiss cheesing a piston would change the structural integrity in anyway, the spring resting on the back of the head, having no pressure what so ever on the side walls. their is no situation in any aeg which causes sidways forces to the piston. the whole reason that i started this project was because when i run the kong power 3 cell 1300 mah lipo i have. their were significant feeding issues , hence (the sector clip). im starting to see that my errors in this were using a piston with only one steel tooth. im thinking in dropping the 130 spring for a m120. im not interested in going to much lower due to the issues of lack of reliability. lurkingknight i see one problem with your statment about over paying for systema. i found 3 sites with systema enrgy pistons for under 13 bucks. every other piston in canada modify, ics run about 24-40 bucks systema is cheaper ...... altho the full metal tooth piston on
http://www.airsoftstore.ca is kinda cheap for 10.50 but before i go out buying a fully metal piston does any one have experience with premature wear on your gears due to running full metal teeth? deathfox- both pistons were matched in tooth removal to the sector gear 1 off each. and the systema cylinder head has an excellent shock pad on it, thus it is doubt full that the problems arised from bouncing off the head. just to clarify i believe the issues to be removing the 1 metal ketch tooth from the systema piston. it seems more likely a cause then the piston being caught with pre engagement due to the fact that every single tooth is worn flat not a bunch starting halfway up the piston and moving back.... i appreciate all of your imput, i like geting the bigwigs of air soft together and seeing their different opinions...... 2 last questions deathfox get some sector clips at your store and steel tooth pistons what are your thoughts??