T-N.T. Studio APS-X HOP-UP SYSTEM HOP-UP Inner Barrel for Marui VSR (303mm)

Features : 
● Simplify the original complex components.
● The inner barrel can be used T-N.T. System all series of precision Air-cushion inner barrel (O/D 8.5mm)/ H inner barrel(O/D 9.95mm), has been changed to a general specifications , to rid itself of special specifications.
● Improve the original innerbarrel rotation problems , improve the stability of shooting.
● T-N.T. Retrofit kits:HOP-UP seat body is anodized aluminum , adjustment knob is steel products , Improve the original breakable problem.
● Adjustment range from the original approximately 0.3mm to 1.0~1.2mm.May correspond 0.3g ~0.43g BB , have more options !!
● Change by about two Jimi screws to fix the inner barrel, more stable !!
● Before shipping, completed by the T-N.T. STUFF assembly adjustment. Only need to remove the outer barrel's 2 fixing screws → placed in T-N.T. Retrofit Kit → lock fixing screw back → in accordance with the kind of BB to adjust the amount of HOP-UP → Complete !!