SKU: 85458867228

Elite CNC Hop-Up Chamber for M4

Sale price$96.69 Regular price$107.43
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Ships within 48 hours · Estimated delivery Sep 25 - Sep 30

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Description

Elite CNC Hop-Up Chamber for M4Prometheus ELITE CNC Hop Up Unit Compatible with standard hop up, flat hop, and R hop CNC construction Includes 2 Prometheus buckings and nubs Ball bearing spring set for secure adjustment with positive clicks Compatible with standard nozzles Widely compatible chamber design The Prometheus ELITE CNC parts series takes Prometheus designs to the highest level for those seeking the most premium hop up unit. The highly customizable ELITE hop up chamber

Prometheus ELITE CNC Hop-Up Unit

●Compatible with standard hop-up, flat hop, and R-hop

●CNC construction

●Includes 2 Prometheus buckings and nubs

●Ball-bearing spring set for secure adjustment with positive clicks

●Compatible with standard nozzles

●Widely compatible chamber design

The Prometheus ELITE CNC parts series takes Prometheus designs to the highest level for those seeking the most premium hop-up unit. The highly customizable ELITE hop-up chamber allows the use of standard, flat hop, and R-hop inner barrels and buckings without compromising performance. Use the included ball-bearing spring set for secure adjustment with positive clicks at every hop setting, or remove it for finer adjustment—the choice is yours!

Our two most popular standard buckings are included, the purple bucking and the blue bucking, covering a wide range of BB weights and hop configurations. The precision CNC-machined chamber is manufactured in Japan and is compatible with a wide variety of standard M4-type builds, including Krytac, Tokyo Marui, G&G, and many more!

■ Brand: Prometheus

■ Includes:

・ CNC Hop-Up Chamber

・ Prometheus Purple Bucking (soft)

・ Prometheus Blue 60-Degree Bucking (firm)

・ Ball-bearing spring set (removable for finer adjustment)

・ Barrel clip

・ Vertical hop tension arm

・ Hop arm lever

・ O-ring

・ Stop screw

■ JAN: 4571443182197

■ Caution:

※ Not all AEG models are fully compatible without modifications. Use the stop screw or the original barrel stabilizing springs for 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 preset fitting 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: 85458867228

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Pat
West Palm Beach, US
★★★★★ 5
work well
Color: Light
I recently switched to this mineral sunscreen after having irritation and redness from several chemical sunscreens, and it has made a big difference for me. My skin is sensitive, but this one feels gentle and comfortable without causing burning or itching. It gives me good protection and doesn’t leave my skin feeling worse by the end of the day. Definitely a better option for sensitive skin.
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Reviewed in the United States on May 27, 2026
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Michelle Oberfeldt
San Leandro, US
★★★★★ 5
Glowy SPF skin tint, Great skin-like coverage
Color: Medium
I’ve tried a lot of skin tints and this one actually surprised me. The Colorescience Flex Shield gives that “your skin but healthier” look without feeling heavy or greasy. I love that it starts white and adjusts to your skin tone — it blends in really naturally and evens everything out without looking makeup-y. The finish is glowy but still skin-like, and knowing I’m getting SPF protection at the same time makes it perfect for everyday wear. On busy days this has honestly replaced my foundation.
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Reviewed in the United States on May 25, 2026
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Kate
Port Orchard, US
★★★★★ 5
The best sunscreen I've tried
Size: 8 Fl Oz (Pack of 1)
Both of my parents and both of my maternal grandparents have had skin cancer at least once, so sunscreen is an absolute must for me. I also have sensory processing issues and can't stand sunscreens that smell artificial and/or leave my skin feeling sticky or greasy. Finally, my skin is super sensitive, so I need a sunscreen that I can apply daily without causing a reaction. I've tried literally hundreds of different sunscreens at all different price points, but because of my rigid list of requirements, I've usually ended up spending a fortune on sensitive-skin-formulated face moisturizers with SPF and using them on all my exposed skin in place of normal sunscreen, because they've been the only options I've found that check every box. Enter Hawaiian Tropic sport sunscreen. Sure, it doesn't absorb into my skin quite as thoroughly as my favorite SPF moisturizer, but it's also less than 1/6th the price for 8x the quantity. It also has a nice scent that doesn't give me a headache (no overtly chemical smell), only barely leaves my skin feeling greasy, and doesn't cause any irritation with daily application. It's the only "normal" (non-moisturizer) sunscreen I can stand to wear. I literally have one bottle in my car, a second in my purse, and a third in my medicine cabinet at all times.
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Reviewed in the United States on May 20, 2022
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truthteller
San Leandro, US
★★★★★ 5
My top choice for outdoor sun protection
Size: 8 Fl Oz (Pack of 1)
This sunscreen is so important to use for exposed skin sun protection. Hawaiian Tropic sunscreen ( 50 SPF ) is, in my own personal opinion, the best on the market.
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Reviewed in the United States on March 5, 2026
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laura j wilmot
Lake Worth, US
★★★★★ 5
Smells like coconuts and works!
Size: 8 Fl Oz (Pack of 1)
I was trying to find an SPF 30 sunscreen that smells nice since I'm at work and go on a walk at lunchtime. This sunscreen smells like coconuts and never makes me smell like sunscreen! I will definitely keep buying it when I run out! I haven't gotten a sunburn with it on either. It smells good and does the job!
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Reviewed in the United States on August 6, 2025

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