SKU: 1292282546

Elite CNC Hop-Up Chamber for VFC M4

Sale price$116.99 Regular price$129.99
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Description

Elite CNC Hop-Up Chamber for VFC M4ELITE CNC HOP UP UNIT for VFC Manufactured with ultra high precision CNC machining Rotary type, hop up dial with positive click adjustment Vertical aluminum hop arm for consistent hop performance Includes two buckings: Prometheus Original Purple and New 60 Degree Blue The Elite Hop Up Chamber is the ultimate precision CNC machined hop up unit designed for VFC based AEG electric airsoft replicas. This chamber pushes every element of the hop up system

ELITE CNC HOP-UP UNIT for VFC

●Manufactured with ultra-high precision CNC machining

●Rotary type, hop-up dial with positive click adjustment

●Vertical aluminum hop arm for consistent hop performance

●Includes two buckings: Prometheus Original Purple and New 60 Degree Blue

The Elite Hop-Up Chamber is the ultimate precision CNC-machined hop-up unit designed for VFC-based AEG electric airsoft replicas. This chamber pushes every element of the hop-up system to the maximum, greatly enhancing the performance of your airsoft replica and its hop-up. Lightweight aluminum is used in the construction of this chamber, and it is fully machined in Japan. The lightweight yet durable aluminum is precisely manufactured, allowing for excellent consistency. In addition to its construction, the hop-up dial uses a ball bearing and spring to provide a positive "click" sound when making adjustments. This design not only allows for extremely precise adjustments, but also keeps the hop setting securely in place even under heavy use.

Our hop-up buckings are designed to fit perfectly with our EG inner barrels. By combining our barrel and bucking with this CNC hop-up chamber, exceptional air seal is guaranteed, resulting in impressive performance on the field. With the inclusion of two buckings, you can choose the original Prometheus Purple bucking for velocities under 350 FPS with 0.28g BBs, or the Prometheus 60-degree Blue bucking for velocities of 350+ FPS using 0.28g up to 0.32g BBs. Build your AEG to the highest standards with a Prometheus Elite CNC chamber, bucking, and barrel for optimal performance!

Compatibility:

●VFC Avalon Series AEGs

●VFC Samurai Edge Series AEGs

●SIG AIR Proforce MCX AEGs

●SIG AIR Proforce MPX AEGs

●BCM Air MCMR AEGs

●VFC H&K 416 Series AEGs

●VFC H&K 417 Series AEGs*

*417 Series AEGs are not a direct fit and may require some modification. Removing or trimming the hop-up retention clip will allow this chamber to fit properly. Please consult a trusted and reputable airsoft technician for assistance.

■ Brand: Prometheus

■ JAN: 4571443183613

■ Caution:

※ Not all AEG models are fully compatible without modification. Use the original stopper screw or barrel stabilizing springs to ensure a secure fit.

※ Be careful not to apply silicone spray or oil inside the inner barrel or on the hop-up bucking, as this may cause inconsistencies.

※ The use of LayLax Prometheus inner barrels and hop-up buckings is recommended for optimal performance due to the pre-set fit dimensions.

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: 1292282546

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Jason
Lowell, US
★★★★★ 3
Decent Look, But Sizing and Shrinkage Are Dealbreakers
Size: Medium, Color: White
Product: U.S. Polo Assn. Men’s Classic Polo Shirt Used for: 5 and a half months Key Features: – Clean, classic polo style with a decent fit (visually) – Breathable and lightweight for casual wear – Appears durable and holds up in the wash Ratings: Quality: The shirt feels alright and seems to hold up after regular washing. That said, it shrinks noticeably, and the sizing already feels off to begin with. Rating: 4/5 Performance: It’s wearable, but nothing exceptional. The fabric is fine for casual use, but the sizing was a big issue—I usually wear a medium, and this felt like an extra small. I even passed it on to someone smaller than me and they found it tight too. Rating: 3/5 Value: It’s reasonably priced, but there are definitely more comfortable and better-fitting polo shirts out there in the same price range. Rating: 3/5 Pros: – Easy to wash and care for – Seems durable over time Cons: – Shrinks badly in the wash – Sizing runs very small and feels inconsistent Summary: The U.S. Polo Assn. Classic Polo Shirt might work if you size up significantly and don’t mind a snug fit. It looks decent and holds up to washing, but the shrinking and poor sizing really hurt the overall experience. If comfort and a reliable fit matter to you, there are better options available for a similar price. Overall Rating: 3/5 Disclaimer: This review is based on my personal experience using the product. I'm not an expert—just sharing my honest thoughts to help others make an informed decision.
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Reviewed in the United States on July 22, 2025
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Mounzer Saad
Port Orchard, US
★★★★★ 5
Nice shirt for the money
Size: Medium, Color: Heather Dark Gray
The shirt fits nicely. Seems to be of good quality.
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Reviewed in the United States on May 8, 2026
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Charles Myers
Fort Morgan, US
★★★★★ 5
Good product as advertised
Size: Large, Color: West Blue
Bought many of these. Look good and fit true to size for the price
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Reviewed in the United States on May 25, 2026
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DG
Waukegan, US
★★★★★ 5
Good shirt
Size: Small, Color: Black
Very nice shirt, I usually wear medium but I had to get one size smaller. The small men size fits my collar great but the dryer might shrink it.
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Reviewed in the United States on May 5, 2026
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Steve S.
Lexington, US
★★★★★ 4
It’s not Polo but a good shirt
Size: X-Large, Color: White
I too thought it was Ralph Lauren Polo but found out that it was US Polo Association. It is a bit boxy but fits well. It is a good quality shirt and a good value for the price. Runs true to size.
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Reviewed in the United States on June 7, 2026

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