TNT Full Hop Up 275mm Retrofit Kit Version 3 For KSC MP9 GBB Series Housing - Best use in Conjunction

- Best use in Conjunction with Metal Slide/Outer Barrel + High Flow Blowoff Valve

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With the technology of AQUA PRO+TECH

TNT Full Hop Up 275mm Retrofit Kit Version 3 For KSC MP9 GBB Series Housing - Best use in ConjunctionProduct Descriptions: KSC MP9 TP9 upgrade kit, which corrects the original special specifications HOP UP assembly, change to uses the adjustment knob to adjust HOP UP, and the adjustment knob is made of steel, easy adjustable and more durability, the inner barrel is fixed with screws on both sides to make the ballistic performance more stable, and used regular GBB specification inner barrel (outer diameter of 8. 5mm), allowing players to follow their