AAP-01 129mm Precision Inner Barrel 6.03

"Morpheus" Dual Bore Hybrid Barrel 113MM

Hi-Capa 5.1 112.5mm 6.00mm Power Barrel

G Series Chamber Set with 84mm 6.01 Inner Barrel + Autobot 60°

Hi-Capa 5.1 Gold Match Pistol 112.5mm 6.03mm Inner Barrel

G Series Chamber Set with 113mm 6.01 Inner Barrel + Autobot 50°

Guren 03-1 Tokyo Marui MK23 Inner Barrel - 6.03MM - 133MM

97MM 6.00MM Series Power Barrel G17/G18C/P226

Raizen Tokyo Marui MK23 Inner Barrel - 6.05MM - 133MM

Gas Blowback TM FNX-45 Inner Barrel 113.5mm

MK23/SSX23 150mm 6.04 Crazy Jet Inner Barrel