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Madbull Ultimate 3-in-1 Hop Up Chamber Unit for M4 / M16 Series (Free Shark Hop Bucking)

MB-HOPUNIT
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SKU
MB-HOPUNIT
Another practical innovation from MADBULL, this new metal hop-up unit / chamber has 3 functions in 1! Can accommodate internal LED unit for tracer function, chamber lock function to prevent BBs from falling out during reloads, and a new adjustment design that stays in place and won't shift during full auto fire.
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Product Specification
ColorBlack
BrandMadbull
ModelAR/M4 SERIES
PlatformELECTRIC (AEG)
Replica TypeRIFLE
Net Weight (kg)0.04
Length (mm)0.0
MaterialMetal
Another practical innovation from MADBULL, this new metal hop-up unit / chamber has 3 functions in 1! Designed by airsoft player Brian Holt, Madbull implemented Brian's idea with the following smart features:

1. LED Tracer Unit (Optional item sold separately) Product Code: MB-LED
2. Chamber Lock (Prevents BBs from falling out when you eject magazine)
3. Easy adjustment using new design dial for more stable hop-up

This set also includes a free MADBULL blue 60 degree SHARK hop-up bucking rubber.
Note that the chamber lock function works via an O-ring in the BB feed tube that goes up to the firing chamber. The O-ring prevents BB's from falling out of the gun when you pull the magazine out, which is normal in a Marui type gearbox. If you find this causes any problems for you, or you prefer that the 3-4 BB's in the feed tube fall out of the gun during reloads, you can simply remove this O-ring to disable the chamber lock function.

New hop-up adjustment dial stays in place and won't shift from vibration during full-auto firing, giving you more reliable and consistent hop-up than in traditional guns with slide-type hop-up adjustment lever.



And if you need one more reason to get this hop-up unit, Madbull tested this hop-up unit on the Echo1 M4 and got a 5% increase in power due to a better air-seal. So you get 4 benefits in one unit! Need we say more?
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