This porting pattern has shown during testing to be the most effective in the release of pressurized gasses from behind the paintball. Because of the unique hole pattern and diameter of each hole, this combination reduces pressures very evenly from behind the paintball as it exits the muzzle. This results in a straight flight pattern due to no turbulence and no spin on the paintball. The milling breaks up the solid appearance of the barrel and gives it a low profile.
BODY PORTING PATTEN
The body porting pattern is unique; it quiets the sound of a shot to almost no sound at all when paintballs are fired. The holes also aid the transfer of the paintball from a tight bore to a loose bore size that allows a paintball to regain shape and stability before exiting the muzzle. The bore size of the body is a very important feature of the SM-1 barrel and has been perfected to a size that makes the barrel accurate and reliable in all weather conditions
Inserts come in. .683, .686, .689, .692, .695
The Sanchez Machine Orbium Phantom Barrel Kit is older, so while it may be available used and in a few cases new, it is not commonly available anymore.