*Spring-Type Bangstick Only* Our bangstick powerhead barrels are interchangeable. You can change the original caliber of your Bangstick simply by changing the Powerhead barrel to your choice of .223, .357, .44 magnum or .410 shotgun. The .410 shotgun "High performance" Powerhead is an excellent choice for Alligator hunting. You also might find the shotgun shells more available and affordable. Up to 3" ammo can be used.  We highly recommend using .410 slugs only, or 45 Long Colt pistol ammo can also be used. (Note: This barrel is an accessory for our spring-type bangstick to only change caliber size.)