The Kel-Tec PLR-16 is a semi-automatic, gas piston operated pistol chambered in 5.56/.223 with a 30+1 round capacity. The 9.2-inch barrel has a twist rate of is 1 in 9 and a threaded muzzle (1/2-28). Both front and rear sights are adjustable, and the top of the receiver is equipped with a picatinny rail for any number of accessories. The black frame is made of high-impact glass fiber reinforced polymer. The weight is 3.6 pounds and the overall length is 18.5 inches."/\