As some of you may know I have an old TM M4A1 that has become Triggers Tactical Broom. The guts and outers have pretty much all been changed over the last few months in a seemingly endless chase to get the thing working better than it was stock (230fps, 3 parts of f-all range). When it was finally all together I loaned it to a buddy who used it for half a day before it jammed. Despite my protestations that once it had jammed he should maybe stop pulling the trigger, several exploratory bursts of auto were forced upon the poor thing.
Stripped down once again it seemed to merely be a BB stuck in the hop. I cleared it, tried again and the same thing happened so I ordered a new rubber (Prommy soft) which I installed tonight. Nice. All went back together nicely and so to test firing. A few single shots came out very nicely thank you so a burst of auto was called for. THRAAAAP! THHRAAAAAAAAP! Cool. One more for luck - THRRAAAAcccgghhhhh cghghhhhhhhh cjhghhhhhhhhh. Bugger.
One spectacularly chewed piston.
So - to avoid this tale of woe in the future, what do I need to do? New piston (obvs) but what else? The gun is running a 7.4v LiPo, standard gears, original motor and a Nano AB mosfet. Do I need to worry about AoE or just get a new piston with all metal teeth? Please also bear in mind that this is the ORIGINAL TM piston, the gun was already 10+ years old when it got to me!
What say you AFUK massive?