Nine Ball 6.03mm Tightbore Inner Barrel for VSR/GBB Pistol

If you are after a bit more accuracy from your GBB pistol, a tightbore barrel is the easiest and most effective solution! Introducing the 6.03mm Tightbore Inner Barrel from Nine Ball, one of the best inner barrels you can treat yourself to. The Inner Barrel features standard inner barrel cuts, meaning the barrel is compatible with TM-based GBB pistols with the VSR style bucking (WE, Umarex G series etc.). Due to its length, we recommend this for GBB pistols, specifically HI-CAPA 5.1 and 4.3. The inner barrel is constructed from stainless steel, with a highly polished internal surface for minimal friction and a deep and smooth crown to ensure your BB leaves the barrel smoothly and consistently. This barrel is cut for either VSR/GBB style HOP buckings.