Hey Guys,
I've been looking into putting some slugs through my M4 and from what I've read cylinder bore is the way to go. Been trying to find one and everyone is on back order. Im starting to think they do not exist. Anyone put me in a right direction?
I've been looking into putting some slugs through my M4 and from what I've read cylinder bore is the way to go. Been trying to find one and everyone is on back order. Im starting to think they do not exist. Anyone put me in a right direction?




















































