TexasCHLforum.com

That is an excellent book(The AR-15 Complete Assembly Guide), but, on page 22, bottom picture, the hammer spring is shown incorrectly placed on the hammer. I used this book for building my 1st AR and after completition, I test fired it. It would fire one time and not reset. I went on the AR forum and they told me what to do to fix it. Go to Brownell's and use their free video series on building an AR. That really helps.

After you build a few, you learn what to avoid in the way of scratches or nicks putting the bolt release pin in and the trigger guard pin in. The right punches surely do make a difference and putting some duct tape on the right and left side of the bolt release when you hammer in the bolt release pin will save you from scratching it up. You can start with a larger punch but when you get close to the pin entrance, go with a smaller punch, since that is where a nick or scratch can occur. Look at the factory complete lowers and you will see no scratches or nicks. On a sloppy homemade job, you usually will see some. If you don't care about workmanship, bang away.