Presenting the Magpul MAG1076-BLK, also known as the Magpul PC BackPacker. This versatile piece sports a drop-in design which aligns perfectly with all factory-standard Ruger PC Carbine models. Whether it\'s the 9mm Luger or the 40 S&W, it works seamlessly with both. The distinguishing feature of this BackPacker is the unique locking interface. This interface attaches the barrel assembly securely to the stock body when the equipment is in transit. It also sports a comfortable, ergonomic handguard that is compatible with M-LOK.Further, it boasts two efficient storage compartments. One is a water-resistant grip storage area, and the second is neatly tucked away in the riser section. The design also provides the option for QD sling mounting. For the best in non-slip grip, there\'s MOE SL nonslip rubber butt-pad compatibility. If you\'re looking for an extra 3/8\" LOP and superior comfort, you can additionally couple this BackPacker with the MOE SL Enhanced Rubber Butt-Pad (MAG349).In conclusion, the package includes interchangeable standard and optic-height cheek risers. Buy the Magpul PC BackPacker for an optimal and enhanced shooting experience.