Use this stock For those who have a shorty M1A just like a SOCOM or Scout Squad model with the shorter barrel. This stock is manufactured from a proprietary carbon fiber composite that makes the stock potent still light-weight. The magwell is relieved of fabric so magazine changes are fast. https://jeffreybzxne.thenerdsblog.com/35122426/the-fact-about-mk14-ebr-stock-that-no-one-is-suggesting