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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Shawn
San Leandro, US
★★★★★ 5
Very happy
I recently purchased a set of floating shelves, and I couldn't be happier with my decision! From the moment I opened the box, I was impressed by the quality of the materials. The shelves are sturdy and well-crafted, giving me confidence that they will hold my books and decorative items without any issues. Installation was a breeze! The package came with clear instructions and all the necessary hardware, making the process quick and hassle-free. I was able to mount them in no time, and I appreciated how everything lined up perfectly. As for the aesthetics, these shelves are a game changer for my space! They add a modern touch to my room and provide a stylish way to display my favorite pieces. The sleek design complements my décor beautifully, and I've received so many compliments from friends and family. Overall, these floating shelves exceeded my expectations in every way. They are not only functional but also enhance the look of my home. I highly recommend them to anyone looking for a stylish and easy-to-install shelving solution!
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Reviewed in the United States on March 22, 2025
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Verified Purchase
Joey Kapinos
Whiting, US
★★★★★ 4
Shelf is sturdy and made of good material, easy to assemble , LED strip could be better
Size: 24 x 6, Color: Black-rgb, Size: 24 x 6, Color: Black-rgb
The shelf is built of solid material and it is very easy to assemble and also install. The LED strip is okay, nothing special and if you don't flick the actual switch on/off of the battery pack your batteries will drain EXTREMELY FAST; the RGB will start flashing making it seem unusable/defective because the controller won't function properly either when in reality it's just dead batteries. I'd probably buy other LED strips that are of higher quality, rechargable and have more features if I were to purchase these again in the future. Pleased with the purchase overall though.
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Reviewed in the United States on May 14, 2026
K
Verified Purchase
katie casey
New York, US
★★★★★ 5
Great shelves and very sleek
Size: 31 x 7, Color: Black-rgb
Love these shelves so much. They have been holding up my Lego flower collection beautifully
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Reviewed in the United States on February 2, 2026
I
Verified Purchase
Ivan
Louisville, US
★★★★★ 1
wasting your money
Size: 35 x 7, Color: White-rgb
I’m very disappointed with this purchase. The shelves have a questionable finish - honestly, you can get something cheaper and much better quality at IKEA. But the biggest issue is the lighting. None of the lights work. I put in brand-new batteries and absolutely nothing happens. I wouldn’t recommend wasting your money on this product.
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Reviewed in the United States on November 13, 2025
M
Verified Purchase
MemoJuan13
Belleville, US
★★★★★ 3
Lights stop working after a few usage
Size: 31 x 7, Color: Black-rgb
I had these shelves for a few months now. The shelves are great and are very easy to install. I also like that they offer different sizing, so depending what you are storing on them. They can fit a lot of items and are sturdy so you don’t have to worry about it falling. The lights were amazing at first and the main reason why I bought this product, but after a few times using them they stopped working completely and no longer connect.
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Reviewed in the United States on November 11, 2025

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