How to install AR-15 trigger?

You can either do it yourself with the help of a few simple tools, or you can take it to a gunsmith for assistance. Here is a brief overview of how to install an AR-15 trigger yourself:

1. Make sure that your rifle is unloaded and clear before beginning any work.
2. Use a screwdriver or Allen wrench to remove the grip from the lower receiver.
3. Remove the pin holding the trigger in place and take out the old trigger.
4. Install the new trigger in reverse order, making sure to replace the pin securely. Be sure to test your rifle before using it again to ensure that the trigger is working properly.