Ask the Community

Shannon, The buffer tube is Mil-Spec and is fitted with a basic six-position shoulder stock that has a checkered butt plate and a sling mount.

Mil-spec buffer tube - "Six-position, telescoping, M4-style buttstock and Mil-Spec buffer tube allow the rifle to be properly sized for different shooters or varying levels of outerwear." from the model page on the Ruger site: https://www.ruger.com/products/ar556/specSheets/8529.html

Its a mil spec buffer tube