If I am not planning on using them for a long time or storing a new gun for the future. I like to squeeze the trigger before storing it. Probably does not matter either way. I also do that with my ARs and Bolt Guns by squeezing the trigger and slowly closing the bolt. Just the way I do it. As stated it is what ever you feel comfortable with. I went to Glock Armorer School and the Advanced Armorer School at there was no mention either way that I recall!
The Constitution is not an instrument for the Government to restrain the people. It is an instrument for the people to restrain the Government!
Today, we need a nation of Minutemen, citizens who are not only prepared to take arms, but citizens who regard the preservation of freedom as the basic purpose of their daily life and who are willing to consciously work and sacrifice for that freedom."
-- John F. Kennedy