LN MK3 Upgrade Parts Type:120mm barrel This 8-shot upgrade cylinder is

This 8-shot upgrade cylinder is compatible with Nerf Zombie Strike Hammershot blaster

Sift the 7-8mm gel ball size to around 7

10x 35x10mm Short Darts

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LN MK3 Upgrade Parts Type:120mm barrel This 8-shot upgrade cylinder isThis upgrade spring and barrel can fit for both LN mk3 and dart zone pro series mk2 nerf gun blaster. Material: copper for the barrel. Piano wire for the spring. Spring power: 12kg. Barrel length: 83mm; 105mm; 120mm; 140mm. Inner dia: 13mm. Outer dia: 16mm. Package: 1x mk2 barrel. or 1x dart zone mk2 spring. Note: the inner dia of two outlet parts need to be widened to 16mm for installing the extension barrel