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HOP-Up Chamber for Electric Airsoft M4 / M16
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1.MAXX CNC Hop-up Chamber M4A PRO (AEG) – Red
2.RetroArms C-CLIP Inner Barrel Lock M4
3.MAXX CNC Hop-up Chamber M4P PRO (HPA PolarStar) – Blue
23,22 € In Stock
4,19 € In Stock
24,11 € In Stock
3,17 € In StockEPeS O-ring set for AEG hop-up chamber: EPES
E381-SS
Set of Replacement O-rings for AEG Hop-Up Chamber Adjustment Elements from various manufacturers. When one ring wears out, you'll have an immediate solution at hand! No stress, be EPeS!
3,17 €In Stock
4,23 € In StockEPeS set of o-rings for pressurizing the AEG hop chamber: EPES
E381-PCH
Precision and Accuracy are influenced by variations in shot power. This dispersion should be minimized as much as possible. O-rings are placed on the inner barrel instead of the spring, pushing the AEG chamber more onto the gearbox. This extends the lifespan of the gearbox and, most importantly, improves performance consistency. You'll notice the...
4,23 €In Stock- 79,93 € In StockMAXX CNC Hop-up Chamber M4A PRO (AEG) – Red
: MAXX
MX-HOP010MA
Maxx Model CNC hop-up chamber M4A PRO in red is a top-tier upgrade part for AEG M4 / AR15 replicas. It offers precise CNC machining, rotary TDC adjustment and maximum shot consistency. Thanks to compatibility with R-Hop and standard buckings and precise fitment, it ensures stable performance without FPS loss. The BB latching system prevents BB loss during...
79,93 €In Stock - 79,93 € In StockMAXX CNC Hop-up Chamber M4P PRO (HPA PolarStar) – Blue
: MAXX
MX-HOP010MP
Maxx Model CNC hop-up chamber M4P PRO in red is a premium upgrade part for HPA PolarStar V2 setups (F2, F1, Jack and others). It offers precise CNC machining, rotary TDC adjustment and maximum shooting consistency. Thanks to compatibility with R-Hop and standard buckings and precise alignment, it ensures stable performance without FPS loss.
79,93 €In Stock 
84,16 € In StockMAXX CNC Hop-up Chamber M4i PRO (ICS AEG) – Silver: MAXX
MX-HOP010MI
Maxx Model CNC hop-up chamber M4i PRO in silver is a premium upgrade part for ICS AEG M4 platforms (SSS / CXP / CS4 / EBB including older models). It offers precise CNC machining, rotary TDC adjustment and maximum shooting consistency. Thanks to compatibility with R-Hop and standard buckings and precise alignment, it ensures stable performance without FPS...
84,16 €In Stock
46,10 € In StockCNC Aluminum Hopup Chamber MXW for HPA M4 MTW: MAXX
MX-HOP010MX
The highest quality HopUp chamber designed for tuning M4 / M16 replicas. Rotary chambers manufactured by Maxx Model Products are made for the most demanding of players, they offer precise workmanship that is unprecedented on the market and perfect operation of the HU system in the replica. MXW = is for Wolverine HPA MTW Milspec, Forged, Billet a MTW-9.
46,10 €In Stock
27,49 € In StockEPeS Tracer unit for hop-up chambers: EPES
E353-UNI
Light up your shots with the universal DIY Illuminating Tracer module for hop-up chambers by EPeS. With this illuminating module from EPeS, you can achieve impressive shots using TRACER illuminating BBs. It can be powered in parallel with the motor or using processor units such as Perun Hybrid and JeffTron Leviathan. No stress, be EPeS!
27,49 €In Stock
4,23 € In StockRetroArms INOX 0.1 mm Hop-up Chamber Shim (5 pcs)7221
RetroArms INOX 0.1 mm hop-up chamber shims are designed to finely move the hop-up chamber away from the gearbox and thereby fine-tune the relative position of the chamber and nozzle. They can help diagnose certain feeding issues and verify the appropriate nozzle length without having to disassemble the gearbox. The package contains 5 stainless steel shims.
4,23 €In Stock
3,76 € In StockSilent Industries Barrel centering Ring for ALPHA ChamberSILENT08
Silent Industries centering ring for ALPHA chamber offers a centring groove for stabilizing the inner barrel in the chamber. This enhancement easily fixes the inner barrel in the chamber in a perfect alignment, achieving a 100% hop-up effect and perpendicular pressure without turning sideways.
3,76 €In Stock
90,92 € In StockMAXX CNC Aluminum Hop-up Chamber MGW (MTW M4 series) - Black: MAXX
MX-HOP020MGW
CNC Aluminum Hop-up Chamber MGW from MAXX Model uses a GBB / VSR bucking and a GBB inner barrel, ensuring sniper-level accuracy and consistency. It is compatible with TM and VFC AEG and HPA replicas. Offers fine hop-up adjustment, a replaceable nub, and a BB retention system. Designed for Maple Leaf Wonder, Super, and MrHop GBB buckings.
90,92 €In Stock
87,54 € In StockMAXX CNC Hop-up Chamber M4G (ICS AEG → VSR) – Black: MAXX
MX-HOP020MGI
MAXX Model CNC hop-up chamber M4Gi in black is a unique hybrid upgrade for AEG ICS M4 platforms (SSS / CXP / CS4 / EBB including older models). It uses GBB / VSR buckings and inner barrels, delivering higher accuracy, tighter grouping and consistent performance. With CNC construction and precise TDC adjustment, it takes your rifle performance to the next...
87,54 €In Stock
90,92 € In StockMAXX CNC Hop-up Chamber M4G (AEG → VSR) – Black: MAXX
MX-HOP020MG
MAXX Model CNC hop-up chamber M4G in black is a unique hybrid upgrade for AEG and HPA M4 / AR15 platforms. It uses GBB / VSR buckings and inner barrels, delivering higher accuracy, tighter grouping and consistent performance. With CNC construction, precise TDC adjustment and BB latching system, it takes your rifle performance to the next level. Ideal for...
90,92 €In Stock
63,01 € In StockRetroArms CNC Hop-up Unit M4 / AR15 PRO − Black9426
RetroArms CNC M4 / AR15 PRO hop-up chamber in black is a precision-machined chamber for AR15 AEG platforms with magazine well height adjustment in 0.2 mm increments. The EN AW 7075 aluminium body is complemented by a collet nut for secure inner barrel mounting and an O-ring that helps prevent BBs from falling out during magazine changes.
63,01 €In Stock
88,39 € In StockMAXX CNC Hop-up Chamber M4W New Version for HPA M4 MTW - Black: MAXX
MX-HOP020MW
CNC hop-up chamber M4W New Version by MAXX Model for HPA rifles MTW M4/AR15 (including MTW‑9) in black. Designed for HPA MTW M4/M16/AR15/MK18 replicas (Milspec, Forged, Billet) by Wolverine Airsoft. Maximum accuracy thanks to CNC machining. Supports R‑Hop and standard AEG buckings and barrels. Complete kit including nub types, springs, and mounting...
88,39 €In Stock
12,69 € In StockSA TDC Magnus™ M4 Hop-Unit Unit and Helium™ Flat Bucking - BlackSPARMS377
TDC Magnus™ M4 Hop-Up Chamber and Helium™ Flat Bucking from Specna Arms in black. For AEG airsoft rifles M4, M16, AR15, MK18, HK416 and others. Precise TDC pressure for maximum accuracy. Helium™ Flat bucking without a nub. Stable BB rotation even with heavier ammunition.
12,69 €In Stock
105,30 € In StockEPeS MAXX M4 Hop-up Chamber Tracer Unit: EPES
E353-MAXX
EPeS Tracer Unit for MAXX M4-Series hop-up chambers is a compact UV Tracer module designed for MAXX M4A, M4P, M4i and similar. It enables illumination of TRACER BBs directly inside the chamber without the need for a suppressor. The PH2.0 connector allows connection to ETU units such as Perun Hybrid and JeffTron Leviathan for power supply directly from the...
105,30 €In Stock
10,53 € In StockEPeS MAXX M4 Hop-up Chamber Tracer Unit Bracket Frame (L+R): EPES
E353-MAXX-FR
EPeS standalone frame for illumination unit for MAXX M4 hop-up chamber is a mounting kit designed for installation of the universal UV illumination unit EPeS (E353-UNI) into MAXX M4-Series chambers such as M4A, M4i, M4P, M4G, M4Gi (not compatible with M4W MTW). The package includes a left and right frame.
10,53 €In Stock
88,39 € In StockMAXX M4E CNC Hop-up Chamber Unit (AEG) – Orange: MAXX
MX-HOP020ME
Maxx Model CNC hop-up chamber M4E in orange color is a premium upgrade part for AEG M4 / AR15 rifles. It offers precise CNC machining, rotary hop-up adjustment, and maximum shooting consistency. Thanks to compatibility with R-Hop and standard buckings and perfect alignment, it ensures stable performance without FPS loss. BB retention system with release...
88,39 €In Stock
88,39 € In StockMAXX M4Ei CNC Hop-up Chamber Unit (ICS M4 AEG) – Orange: MAXX
MX-HOP020MEI
Maxx Model CNC hop-up chamber M4Ei in orange color is a premium upgrade part for AEG ICS M4 / AR15. It offers precise CNC machining, rotary hop-up adjustment, and maximum shooting consistency. Thanks to compatibility with R-Hop and standard buckings and perfect alignment, it ensures stable performance without FPS loss. BB retention system with release...
88,39 €In Stock- 1,90 € In StockRetroArms C-CLIP Inner Barrel Lock M4
6472
RetroArms C-CLIP barrel lock for M4 is a durable replacement part for M4 / AR15 hop-up units. The lock is made of polyamide by injection molding and can be used with RetroArms hop-up units as well as units from other manufacturers. The newly added barrel positioning feature helps keep the barrel in the correct position. Black finish.
1,90 €In Stock 
41,87 € In StockRetroArms CNC Hop-up Unit M4 / AR15 BASIC – Black6388
RetroArms CNC hop-up unit M4 / AR15 BASIC in black is designed for AR15-type AEG airsoft guns, such as the M4, MK18, M16 or SR-25. The unit body is made of aircraft-grade aluminium alloy using precise CNC machining. The collet nut ensures precise centering of the inner barrel, while the O-ring at the unit entrance prevents BBs from falling out during...
41,87 €Out of stock