Magpul MAG1076-GRY: Introducing the Magpul PC BackPacker, a highly versatile accessory designed to be a perfect fit for all factory Ruger PC Carbine models in 9mm Luger and 40 S&W. Its intuitive drop-in design makes it easy to install, making it an instant game changer for your firearm. The special locking interface assists in securely attaching the barrel assembly to the stock body during transportation, ensuring safe transit. Additionally, this product also boasts an ergonomic M-LOK-compatible handguard for comfortable handling, with the provision of a water-resistant grip storage compartment. This compartment provides an excellent stash-away space, while a second compartment is smartly-enfolded in the riser section. Further enhancing its usability, it offers an optional QD sling mounting capability for carrying convenience. The MOE SL nonslip rubber butt-pad is another feather in its cap, optimising user comfort during usage. This butt-pad is compatible with the MOE SL Enhanced Rubber Butt-Pad (MAG349) for an additional 3/8\" LOP and enhanced user comfort. Your package includes interchangeable standard and optic-height cheek risers, ensuring the product caters to varying requirements and preferences.