Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 9 - Jul 14
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
Prowin Hop-Up Chamber for M4The ProWin M4 M16 CNC hop up chamber is a major upgrade over the stock plastic or weak cast metal hop up chamber in your AEG. Metal hop up chambers are known for providing a better air seal against the AEG gearbox and feeding much more smoothly than plastic chambers. However, many cast metal hop up chambers have weak points in the metal due to the casting process, but this issue is completely eliminated with the ProWin chamber. This hop up chamber is
The ProWin M4 / M16 CNC hop-up chamber is a major upgrade over the stock plastic or weak cast metal hop-up chamber in your AEG. Metal hop-up chambers are known for providing a better air seal against the AEG gearbox and feeding much more smoothly than plastic chambers. However, many cast metal hop-up chambers have weak points in the metal due to the casting process, but this issue is completely eliminated with the ProWin chamber. This hop-up chamber is fully CNC machined from aircraft-grade aluminum, meaning it is lightweight and durable, and the bright blue color gives your AEG a custom look.
Specifications:
Manufacturer: ProWin
Model: CNC Hop-Up Chamber M4 / M16
Color: Blue
Size: Fits Marui-style M4/M16 AEG
Package includes: one (1) hop-up chamber and parts
Features:
CNC construction
Improved air seal
Lightweight and durable
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.5 ★★★★★
Based on 333 reviews
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Product Reviews
★★★★★ 5
Great size for small toys
Style: Medium 2.9" (4 Pack A)
My poodle love these. Small enough for him to grab from his toy basket.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026
★★★★★ 5
Squeek warning!
Style: Medium 2.9" (4 Pack B)
My dog absolutely loves these! And they seem durable enough to last a while.
But be warned, lol! (See video)
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 14, 2026
★★★★★ 5
Soft plush
Style: Medium 2.9" (4 Pack A)
They are so soft! My dogs love e them
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
★★★★★ 3
Good quality
Style: Small 2.6" (6 Pack)
These were ok not what I was looking for
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Reviewed in the United States on April 23, 2026
★★★★★ 5
great price. cute faces on balls.
Style: Small 2.6" (6 Pack)
cute and funny faces, my 2 small dogs love them
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 4, 2026