- B5 Systems Sopmod Stock: The B5 Systems Enhanced SOPMOD Stock features rugged construction and thoughtful design, from its ergonomic cheekweld to its integrated QD sling mounts and no-slip cushioned buttpad. - B5 Systems Type 23 P-Grip: The composite B5 Systems pistol grip delivers enhanced ergonomics through its steep angle, extended tang and palm-filling design. - Included Vortex SPARC AR Red Dot Scope