Stainless barrel 6.02 mm, M16, 509 mm, ZC LeopardPrecision 6.02 mm barrel ZC Leopard for M16, M15 Rifle (SPR), AUG, CA M24 Socom, G36, CA8-2, M14, M249 MKI a MKII - length 509 mm. Perfectly smooth surface of stainless steel especially in combination with the smaller inner diameter is considerably reduced scattering BBs and partly improves overall weapons range.
Precision inner barrel is part of the upgrade, which together with the appropriate Hop-Up bucking significantly affects the accuracy and partially overall performance/range weapons. The smaller inner diameter, thus inevitably results to better tightening of BBs. At the same time, however, higher demands for regular cleaning and using only quality airsoft BBs (we recomend BBs from BLS). Otherwise, it may lead to a reduction of muzzle velocity as well as accidental or "suffocation," of the whole weapon. If you choose a barrel please don't make decision only according to the inner diameterand the lowest price. An important factor is also the procedure and method of production, the type of finishes, materials and the manufacturer and country where it was made.