SKU: 8580485691

CNC Aluminum Hop-Up Chamber for M4 TM MWS/MK18

Sale price$38.66 Regular price$42.95
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Ships within 48 hours · Estimated delivery Jul 28 - Aug 2

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Description

CNC Aluminum Hop-Up Chamber for M4 TM MWS/MK18This 6063 aluminum hop up chamber is precision machined with CNC technology. Fits T. Marui GBB M4 series rifles and is specially designed for professional shooters and competition use because: 1) High precision dimensions increase firing efficiency and reliability; 2) Smooth surface finish improves smooth BB loading; 3) The large O ring is modified to hold the hop up chamber as a single composite unit, keeping the hop up chamber and inner barrel

This 6063 aluminum hop-up chamber is precision-machined with CNC technology. Fits T.Marui GBB M4 series rifles and is specially designed for professional shooters and competition use because:

1) High-precision dimensions increase firing efficiency and reliability;
2) Smooth surface finish improves smooth BB loading;
3) The large O-ring is modified to hold the hop-up chamber as a single composite unit, keeping the hop-up chamber and inner barrel coaxial with the upper receiver;
4) Dimensions are modified to enhance hop performance and shooting accuracy. Therefore, it differs in size from the original T.Marui hop-up chamber.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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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: 8580485691

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PamiJay
New York, US
★★★★★ 5
Great shirt
Size: 6X-Large Big, Color: Pale Pink
Amazing deal
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Reviewed in the United States on March 27, 2026
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Phill.The.Thrill
Natrona Heights, US
★★★★★ 5
Traditional Grown Man Shirt
Size: Large, Color: Light Grey Vertical Stripe
Great cotton, classically-style button down shirt for guys not wanting anything slim fit, this shirt size is legitimate. It’s a nice heavyweight cotton shirt. I don’t think I’d say it was wrinkle resistant but it doesn’t take much effort to press this garment.
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Reviewed in the United States on January 20, 2026
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xofjohn
Carnegie, US
★★★★★ 5
Softer and Larger than Expected
I was a bit wary of this shirt because I had only purchased 100% cotton ones in the past. My first impression out of the package was how soft the material felt. I was very impressed because it usually takes many washings before oxford cloth shirts get that soft. When I put it on, I discovered that there was no noticeable difference made with the small amount of stretch fabric woven into the shirt. I suspect that there would be some give if I wore the shirt as a tight fit, but I prefer my shirts loose, so it wasn't an issue. I found that the shirt was larger than other same sized shirts I've received from Amazon in the past--bigger is better than smaller, but if you are looking for a close fit, you will want to be conservative in the size you order. I didn't realize until I'd been wearing it for a while that it lacks a pocket, I went to put my glasses in my shirt pocket and there wasn't one!
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Reviewed in the United States on November 30, 2023
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Rene
Battle Creek, US
★★★★★ 5
Excellent
Size: 8, Color: Black
Excellent product
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Reviewed in the United States on January 17, 2026
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Mark E. Bayer
Whiting, US
★★★★★ 5
Great shoes
Size: 10.5, Color: White
These are a great pair of sneakers that work both as casual sneakers and for dressier occasions. They are incredibly comfortable too.
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Reviewed in the United States on November 22, 2025

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