JM Gen8 Gearbox — Full Nylon Replacement for JinMing M4A1, SCAR, UMP45 & More
SKU: 71880328709

JM Gen8 Gearbox — Full Nylon Replacement for JinMing M4A1, SCAR, UMP45 & More

Sale price$23.36 Regular price$25.95
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Ships within 48 hours · Estimated delivery Jul 6 - Jul 11

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Description

JM Gen8 Gearbox — Full Nylon Replacement for JinMing M4A1, SCAR, UMP45 & MoreThis 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

This 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 over stock parts

• Upgraded Over OEM — Metal bushings replaced with reinforced nylon 
  for smoother operation and reduced wear under sustained fire.

• Powerful 460 Motor Included — No sourcing extra parts; ready to 
  install and run straight out of the box.

• Two Fire Mode Options — Choose Original (full auto) or New 
  (semi/full auto) to match your play style and blaster setup.

• Broad Gen8 Platform Compatibility — Fits JM M4A1, SCAR, UMP45, 
  MP5, Gen13, XM316, BLG M16, ZH M249 and more.

• Drop-In Replacement — Designed to fit existing Gen8 housings with 
  no modification required.

• Extend Your Blaster's Life — Rebuild instead of replace; keep your 
  favourite platform running at peak performance.

Specifications:

Brand: jin ming.

Material: nylon constuction with nylon gears.

Fire mode: full automatic (old),  semi/full auto (new).

Color: black.

Motor type: 460.

Plug type: sm.

Package includes: 1x jm gen8 gearbox.

Gen8 Gearbox Disassembly Videos:

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 71880328709

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PJ
Draper, US
★★★★★ 1
Ball
Color: Blue
Only lasted about 10 minutes and my dog chewed through the rope.
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Reviewed in the United States on April 25, 2026
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Brian berns
Lexington, US
★★★★★ 3
Very very hard ball
Color: Orange and Yellow
These balls are nice, but a little bit harder than I thought they would be
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Reviewed in the United States on December 4, 2025
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Nikki Szewczyk
Boise, US
★★★★★ 5
The Chuck Norris of Dog Toys
Color: Orange
If dog toys were superheroes, the Nevperish K9 Training Ball would be Batman—indestructible, effective, and always ready to save the day. This thing flies. I’m not saying I could take out a rogue squirrel in a single throw, but… let’s just say those little guys know to keep their distance now. My 100lb German Shepherd, who we affectionately call "The Toy Terminator," has destroyed every squeaky, chewy, or bouncy thing in her path. But this? This glorious, rope-swinging masterpiece? She’s met her match. It’s like her teeth have signed a peace treaty with this toy. Speaking of flying, if you have neighbors with a backyard that’s less than a football field away, be prepared for some fence-hopping cardio. I’ve had more awkward encounters with my neighbors than I care to admit. Thankfully, my shepherd has learned the art of the double hop—over their fence and back—like some four-legged ninja gymnast. Bonus: great entertainment for the neighbors. This toy isn’t just a ball on a rope; it’s a lifestyle. Open fields? Perfect. Tug-of-war? Immaculate. Backyard fetch? A cinematic masterpiece. It’s basically the Swiss Army knife of dog toys, minus the danger of accidental stabbing. Pro tip: Don’t underestimate how far this thing can go. My first throw ended with the ball in orbit—or maybe it just bounced off a satellite. Either way, my dog was thrilled, and now I need an arm warm-up routine before playtime. So, if you want a toy that’ll outlast your dog’s dental fury and make fetch sessions the stuff of legend, this is it. 10/10, would absolutely get weird looks from neighbors again.
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Reviewed in the United States on January 3, 2025
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sheila speers
Lexington, US
★★★★★ 5
Great buy
Color: Orange
My did loves this ball
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Reviewed in the United States on May 27, 2026
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Lorraine Nathanson
Natrona Heights, US
★★★★★ 5
Colorful, Sturdy & Great Value
Color: Large Set of 4
Purchased for our two puppies when they were 2 months old and weighed about 14 pounds so theses balls were a little big for them to hold in their mouths but that didn't stop them from trying. While they did like these balls they much preferred softer soccer balls, the later of which did not hold up well at all. I had hoped they would play with these balls more when they were older but that hasn't happened 5 months later. I guess it's no fun if you can't tear the toy apart. Colors are very bright and they do enjoy chasing after them as long as I am the one rolling them across the room for them. Maybe when they progress to batting things with their paws they will start to do this for themselves.
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Reviewed in the United States on May 18, 2025

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