Improve your groupings and upgrade your power slightly with this 6.01 mm tightbore barrel from PDI. This inner barrel is stainless steel (SUS304) and has an external diameter of 10 mm.
We recommend using only premium quality BBs with this barrel as anything less than that could risk contact with the inner barrel which at best will hamper consistency and accuracy and at worst damage the barrel.
Redwolf Airsoft encourage you to be sure you are purchasing the correct barrel length for the weapon in mind.