Patriot Ordnance Factory (POF-USA) has taken its standard direct impingement rifle, The Olde School, and added a twist of innovation by replacing the standard stainless steel gas tube with a straight Inconel gas tube.
The Olde School is a direct impingement rifle offered in either a .223/5.56 or .308/7.62X51 configuration. It features the standard elements of the company's Generation 4 series rifles, including the E² chamber and completely ambidextrous lower receiver. The addition of the straight Inconel gas tube increases reliability by nearly doubling the heat that the gas tube can sustain without rupture.

