Complete 37MM Whistle Pig Projectiles ready to load into your aluminum casings.  the Ultimate Signaling type ammo for 37MM launchers. These 37MM Signaling Rounds produce a loud scream from the back of the projectile once launched then finishes with a shower of Stars that then explode into Crackle.  They are purchased in packages of 3 each.   These do require aluminum 37mm casings to complete assembly.  Instructions are included.  Recommended lifting charge of 50 grains of FFG or FFFG powder.  

Manufactured by Signal Source LLC 

Weight: 1 lb

in stock