Use this stock if you have a shorty M1A just like a SOCOM or Scout Squad design with the shorter barrel. This stock is manufactured from a proprietary carbon fiber composite which makes the stock potent still lightweight. The magwell is relieved of material so journal improvements are quick. Springfield https://mini-14-ebr-stock75174.tkzblog.com/29404189/sage-ebr-chassis-brownells-fundamentals-explained