How does a Constitutional Amendment that provides for the right to keep and bear arms render state laws restrict that right as invalid?

How does a Constitutional Amendment that provides for the right to keep and bear arms render state laws restrict that right as invalid? The completed question in Order InstructionThe source material must come from: Criminal Law Today 4th Edition, 2010 ISBN 13: 978-0-13–5042618 Author(s) Frank Schmalleger and Daniel E. Hall, with John J. Dolatowski Publisher: Pearson Education. Use a standard essay format for responses to all questions (i.e. an introduction, middle paragraphs and conclusion). Responses must be submitted as a MS Word Document only, typed double-spaced, using a standard font (i.e. Times New Roman) and 12 point type size. Must be between 350-500 words, 1-2 pages. The essay must answer this Question #1 ”Discuss the requirements of self-defense according to the text and explain what they mean (good faith belief, imminent danger, threat of harm, proportionate use of force to repel attack).”
The terms are defined on pages 119-123 in the assigned textbook. You should first define the term as it is presented in the textbook, and then discuss and explain the term in your own words