THIS IS A DUMMY ROUND **INERT** Meant as a Collectors Item **NO Primer** **NO Powder** **RESIZED LINK FOR SCRATCH-LESS ASSEMBLY & DISASSEMBLY - RESIZED CASE FOR SNUG FIT WITH PROJECTILE** The Perfect Gift For the Military Enthusiast. 20mm Semi-Armor Piercing High Explosive Incendiary (SAPHEI) Fired by the 20mm M61 Vulcan Gatling Gun. The M61 Vulcan is a hydraulically, electrically, or pneumatically driven, six-barrel, air-cooled, electrically fired Gatling-style rotary cannon which fires 20 mm × 102 mm (0.787 in × 4.016 in) rounds at an extremely high rate (typically 6,000 rounds per minute). The M61 and its derivatives have been the principal cannon armament of United States military fixed-wing aircraft for over sixty years 20mm x 102 PGU PGU-28A/B SAPHEI HISTORY -The 20mm x 102 PGU Suite has an optimized aero ballistic shape that reduces time-of-flight and increased velocity at range for increased probability of hit. The PGU-28A/B Semi Armor Piercing High Explosive Incendiary (SAPHEI), qualified as M70LD in Europe, provides broad target spectrum capability by combining light armor and high explosive features into a single round. The PGU-28A/B utilizes basic multipurpose technology with enhanced and optimized ballistics to offer substantial improvements in effectiveness over the 20mm M50 series ammunition. Optimum projectile design for enhanced performance and increased lethality on target