Silent Industries AEG / HPA AK ALPHA CNC Hop-up Chamber - Grey

CNC Hop-Up Chamber ALPHA AK AEG / HPA by Silent Industries

The CNC Hop-Up Chamber ALPHA AK by Silent Industries represents a revolutionary innovation for your airsoft gun. It is the most advanced chamber on the market, developed by a Slovak company specializing in innovative airsoft gun parts. This chamber introduces numerous cutting-edge features that are missing in competing models. Manufactured according to the TM standard for AKs, it is easily compatible with AK models from E&L, Arcturus, Cyma, and LCT, including PP-19 Vityaz, VSS, and AS VAL. Let’s explore what makes the ALPHA chamber truly unique.

1. Fully Functional TDC Pressure System

To achieve maximum consistency in hop-up bucking pressure using the pressing arm, the chamber incorporates TDC technology. This ensures that the pressure moves only up and down. The package includes a TDC pressing arm (trolley) designed for use with a nub, allowing you to choose your preferred type.
We recommend using the Silent Industries nub or another high-profile nub (such as the Omega Nub from Maple Leaf). This TDC system provides the longest travel, meaning you can easily lift heavier BBs.

2. Hop-Up Collar Ring System

The revolutionary tensioning system is easy to assemble and utilizes clamp rings. The package includes two rings—black and white (for finer adjustments, additional rings are available: tight and extra tight). We recommend using the hop-up bucking ML Super Macaron or MrHop with the white ring for looser tension or the black ring for stronger tension.
This is the only chamber on the market that fully supports the hop-up bucking collar.

3. Adjustable Chamber Feed Tube

The adjustable feed tube allows for precise tuning of the BB feed tube length to fit your specific magazines. This feature significantly improves feeding and reduces magazine wobble inside the magwell.

4. Positioning Slot for Precise Inner Barrel Installation

The ALPHA chamber features a dedicated groove that helps center the inner barrel. We recommend using it as a reference point, as some lower-quality barrels may have misaligned hop-up windows. For best results, we recommend high-quality stainless steel barrels from brands like PDI, Lambda, Prometheus, KM Head, T-NT, and ZCI.

5. Revolution for HPA Systems

HPA systems generally generate significantly higher pressure on BBs compared to AEGs, which can cause issues like double feeding, Mid-Cap Syndrome, or difficulties in properly centering the BB in the chamber. The ALPHA chamber, with its innovative hop-up collar ring system, can help address these problems by allowing fine-tuned resistance adjustments during feeding.
We recommend using HPA systems such as Polarstar, Wolverine, or GATE Pulsar.

Package Contents

• ALPHA AK Hop-Up Chamber
• Adjustment ring
• BB feed nozzle
• Pressing arm lever
• TDC pressure arm
• M2 screw for the arm
• M3 screw for the gearbox
• Soft 70A nub (blue, extended)
• O-rings for the hop-up chamber (2 pcs)
• O-rings for the inner barrel to reduce movement during firing (8 pcs)
• C-clip for securing the barrel inside the chamber
• Inner barrel stabilizer with a groove
• 2x shims for adjusting nozzle length without disassembling the gearbox or chamber
• 2x hop-up collar rings (standard black and looser white)

Manufacturer Recommendations

• The ideal nozzle length is 19.7 mm (can be adjusted using the included shims).
• The ALPHA chamber is compatible with various brands, including E&L, CYMA, ARCTURUS, and LCT.
• For optimal performance, we recommend using BBs heavier than 0.28g (R-hop 0.36g+).
• Assemble the chamber carefully and thoroughly check all components.

Installation Guide