Ruger American Predator 223. It uses AR 15 magazines. It sits in an OD green magpul hunter stock. I replaced the picatinny scope mount with a DNZ 30mm mount. It has a vortex diamondback 2 (pictured) that can go with. It is a good shooter. Around 100 rds shot through it. Located in IF. Asking $950 with scope. $650 without.