The lightweight, semi-automatic REC7 Gen II uses a one-piece 17-4 stainless steel piston with two position gas plug. This Barrett REC7 Gen II 5.56 NATO Rifle features a 16" flyweight barrel, flat dark earth receiver, Magpul MOE stock, thread protector, ALG Defense trigger, Barrett handguard KeyMod rail attachment, and one 20 round magazine. Barrett REC7 Gen II Flyweight 5.56 NATO 16" FDE Rifle 14959