Use this stock When you've got a shorty M1A similar to a SOCOM or Scout Squad model with the shorter barrel. This stock is fabricated from a proprietary carbon fiber composite which makes the stock strong yet lightweight. The magwell is relieved of fabric so magazine changes are fast. 1913 https://simonzpyku.angelinsblog.com/29037995/the-basic-principles-of-m1a-evr