A.B. Biller Special Mahogany SpeargunSpecial Mahogany Speargun The A. B. Biller Speargun, built in the U. S. A. and in use all over the world, has proven itself as the foremost production speargun on todays market. The stainless steel trigger mechanism is unsurpassed in reliability and smooth action. The high grade grooved mahogany, teak or padauk barrel provides pinpoint accuracy, easy underwater maneuverability due to its neutral buoyancy and absorbs 80% of the firing noise the gun