JM Gen8 Gearbox — Full Nylon Replacement for JinMing M4A1, SCAR, UMP45 & More Type:new (semi / full auto) Embrace the call of nature

Embrace the call of nature without compromise

CS wargame

and intimidating shotgun style—perfect for Nerf battles

High-capacity

- Will work best with the barrel upgrade

JM Gen8 Gearbox — Full Nylon Replacement for JinMing M4A1, SCAR, UMP45 & More Type:new (semi / full auto) Embrace the call of natureThis is the famous Jinming Gen 8 Gearbox, it's full nylon made, reliable and durable. This is superior to the old one with metal bushings and nylon gears. But most importantly a harden nylon shell. Compatible with JinMing SCAR JM Gen8 M4a1 HLF UMP45 JM MP5 JM Gen13 XM316 blg m16 ZH m249 and other gel blasters using gen8 gearbox. Features: Full Nylon Construction Hardened nylon shell, gears, trigger, T piece and motor housing for superior durability