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AR15.COM
7/4/2011 11:06:19 AM EDT
How often do you need to change them in general for a G17 mag? Likewise, if you keep a magazine loaded in your nightstand for home defense, how often does the magazine spring need to be changed if left compressed? I realize that AR-15 magazine springs, as documented on this website, are supposedly immune to being left loaded all the time, and that instead it is the cycling of the spring from loaded to unloaded that causes spring wear. For pistols, I've read different opinions about spring life when one leaves a pistol mag loaded for months at a time, especially when it comes to 1911 magazines.

Thanks
7/4/2011 12:09:13 PM EDT
[#1]
If it is left loaded all the time it should be GTG.  loading and unloading wears out springs.  I have some glock mags that have been loaded for a decade now and they are GTG as well as mags that get used at the range all the time.  Springs are cheep so changed them when you want but they should last a long time if they are unloaded or loaded most of the time.
7/4/2011 2:36:40 PM EDT
[#2]
Unless you are shooting 1,000 rounds a month, I literally wouldn't worry about them.  Even then, I might change them once a year.  I have never had to, or heard of having to replace mag springs unless someone changed to extended baseplates, or if the mags were incorrectly sprung in the first place.  As was the case with G22 a few years back when they stiffened the frames and started causing slide speed problems.
7/9/2011 9:58:57 AM EDT
[#3]
thanks for the repkies. any other comments?