steel pin 5 when attached at both ends elastic cord 7 is under tension elongated by approximately twenty percent therefore when air pressure projectile launcher 1 is operated elastic cord 7 can only be elongated by eighty percent before being stopped by the overlying braid this ensures that piston tube 3 cannot be completely removed from within barrel tube 2 and in fact remains inserted in barrel tube 2 so there is sufficient overlapping by barrel tube 2 to prevent a misalignment which would interfere with the smooth launching of projectile 11 when ball handle 4 was released it should be noted that the addition of any kind of sealing element mounted on the end of piston tube 3 where it resides within barrel tube 2 as is typical and is usually essential in air pressure projectile launchers would have a negative effect on the operation of air pressure projectile launcher 1 in one instance if an air tight sealing component was introduced between the outside diameter of piston tube 3 and the inside diameter of barrel tube 2 the movement of piston tube 3 would be slower and the resulting launch of projectile 11 less than optimal or require that the user.