3Skull 21" Tippmann 98 Custom RIS Paintball Barrel W/Shroud The new Tactical RIS Combat barrel is made out of aircraft grade aluminium which is strong and lightweight. The 4 rails are made out of military grade composite. The barrel is polished on the inside. The 4 rails are weaver based rails so you can attach bipods, flashlights, lasers, red dots, etc. Another great feature is the barrel is ported with a muzzle break for great efficiency, stealth, and accuracy. Features a military style shroud. This is a 15" barrel with a shroud that extends out an extra 6".