The Kel Tec® (Kel-Tec CNC Industries, Inc®) Sub 2000 Picatinny Rail is made of Polymer. Able to withstand the rigors of abusive recoil, this Kel Tec® (Kel-Tec CNC Industries, Inc®) Sub 2000 Picatinny Rail can secure many of your standard accessories comfortably.