Magpul MAG1076-ODG: Introducing the Magpul PC BackPacker, a drop-in design which is fully compatible with all factory Ruger PC Carbine models that are offered in both 9mm Luger and 40 S&W. This product comes equipped with a distinct locking interface that allows you to attach the barrel assembly to the stock body for ease of transport. Furthermore, it features an ergonomic M-LOK-compatible hand guard for better grip. The Magpul PC BackPacker also includes a water-resistant grip storage compartment and a separate compartment in the riser section for additional storage. Offering optional QD sling mounting capability for flexibility, and the MAG349 MOE SL nonslip rubber butt-pad for added comfort. This can also be enhanced with the optional MOE SL Enhanced Rubber Butt-Pad for an extra 3/8\" LOP. Moreover, to facilitate user customization, the package includes interchangeable standard and optic-height cheek risers. Navigate with comfort and manageability with the Magpul PC BackPacker, optimizing your shooting experience without compromising on convenience.