AR-15 Bolt Carriers. The bolt carrier group is often considered the heart of the AR-15. Its performance is crucial to the proper function of your firearm.Everything from the metallurgy, weight, and finish all the way down to the firing pin hole size can have an impact on accuracy, reliability, and durability.he bolt carrier group is often considered the heart of the AR-15.
If a book has just one author, simply provide the authorâs last name followed by the publication date. In cases where then are more than six authors, the last name and first initial of the first listed author should be used, followed by et al..
Clearly, an author's last name is not enough information for readers to know exactly where the outside information came from. This is why writers need to include a works cited page at the end of all researched essays: the in-text citation references something more fully listed in the works cited page. A works cited page is an alphabetized list (generally by the author's last name) of all referenced materials used in the body of the essay.