[Bertolli_28]

what are fins on a barrel and what is bore size and how can you tell what bore size to get???

 

[martix_agent]

I've never heard of fins on a barrel.
bore size is the size of the barrel on the inside(AKA the barrel bore) all barrels with changeable bores have the size printed on them, or are color coded. To find out mroe info on this, read some stuff in our paint/barrel section.

 

[Bertolli_28]

if you go on hammerhead barrels . com or whatever and look at there barrels they will say a barrel fin is required for it to fit on the gun

 

[martix_agent]

they look like barrel bore sizes that fit inside youre barrel like some other systems use. It's just a cfancy term to matctht eh hammerhead name.