According to Official Guinness Records,
Constantine Wilson and Clarence Robbins (both USA) exchanged their rifles at a distance of 5.48 m (18 ft) apart, with both rifles completeing a 1½ revolution in the air before being caught at George Mason University, Fairfax, Virginia, USA on 23 April 2004.
For all the rifle display demonstration records, the weapon must weigh a minimum of 3.54 kg (9 lb 6 oz), with a mounted strap and a fixed bayonet with a minimum length of 24 cm (9.5 in).
For a complete list of 2004 records, please visit 2004 Guinness Records in United States.