The Hera Arms CQR Stock System was designed to create one of the most rigid and compact options for the AR platform. Mounting easily to standard MIL-SPEC receiver extensions, the CQR provides a rock-solid and lightweight fixed stock set up. Add in multiple sling mounting options and a spacer system to find the perfect length of pull, and the CQR is the perfect option for civilians, LEOs, and military personnel alike.Features: Rear picatinny rail section for monopod use. Ambidextrous sling mounting options. Mounts solidly to MIL-SPEC receiver extensions. Perfect match with Hera's CQR Front Grip. Optional spacers sold separately.