I am highly considering in getting this battery for my PEQ15 box.
http://airsoft-club.com/shop/batteri...for-peq-15-box
It's only $20 and $7 shipping, my only concern is the 1000mah and 15C rating. It should be as powerful as a 7.4V Lipo or 9.6V NiMH which I am currently using but not as strong as a 11.1V Lipo.
It should not cause any harm to my stock KA M4A1. Please stop me if you think otherwise.
Thanks!