Just Arrived! The New KSP TI-7 NP3 Bolt Carrier Group is Now Available View & Buy Now THE X-7 FUSION POLYMER RIFLE SYSTEM Ultralight Polymer AR-15 upper and lower receivers and complete rifles. KSP X-7 Fusion Monarch Rifle $1,563.00–$1,658.00 $1,563.00. X-7 Amphibian Anti-Piracy Weapon $2,400.00 $2,400.00. x7 Fusion Standard Pistol $924.00–$1,023.00 $924.00. KSP X7 Fusion Standard Rifle $890.00–$980.00 $890.00.