Geissele barrels are precision machined and cold hammer forged utilizing the highest quality materials at their state of the art facility in North Wales, PA to ensure the highest quality and consistency of each barrel. Their barrels are High Pressure Tested (HPT) and Magnetic Particle Inspected (MPI). The accuracy and reliability of Geissele CHF barrels makes them an ideal choice for a hard use duty weapon, precision tuned competition gun, and everything in between. Mfg: Geissele Automatics Llc