if one stores thier mags at full then over time the spring in the mag will weaken(being constantly in a compressed state) and it will not feed into the chamber right...if one keeps the mag short a couple rounds ex. a 10 rd mag at 5 rds then the spring will still be strong enough to feed when you fill it to the top..
We've been fighting for a long time. We are outnumbered by the machines who are working around the clock, without quit. Humans have a strength that can not be measured. This is John Connor. If you are listening to this, you are the resistance."
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