Anyways I've owned both the Advanced and SD versions of MP5s. As far as the stocks go. I've been a retractable stock kind of guy. My TM MP5 SD5 didn't eat up a whole 2200mAh battery in a day for me. I've never had to switch batteries half way with my retractable stock using 1000mAh.
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YANHCHAN'S AIRSMITHING: AEG repair/Tune up/Upgrades V2/V3 mechboxes, rewiring/reconnecting.
Ask not what your country can do for you; ask what you can do for your country ~John F. Kennedy
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