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Here is one for the Glock aficionado, how to install a trigger
gunmagwarehouse.com
Gunsmith 101: How to Install a Glock Trigger - The Mag Life
Replacing your Glock's trigger is a straightforward process and one you can definitely manage without heading to your gunsmith. We're going to walk you through the basics of swapping the trigger so you can have an improved trigger press in no time.