RetroArms Precision CNC Hop-Up Chamber for AK V3 Series
Engineered for pro-level AK V3 builds, this hop-up chamber is fully CNC-machined from EN AW 7075 aircraft-grade duralumin—delivering steel-like durability at aluminum’s light weight. Every feature is optimized to lock your inner barrel in place and ensure flawless BB feeding.

Key features

CNC-machined EN AW 7075 body and hardware for rigidity, minimal weight, and micron-level precision

Optimized bore depth for stable performance over 16 m/s with compatible springs and 60 Shore bucking

7075 aluminum collet-nut system (requires 10 mm wrench) for precise inner barrel clamping

Integrated ABS C-clip lock for perfect seal and rapid assembly/disassembly

Compatible with 20.1 mm nozzles and standard or silicone/Teflon hop-up spacers

Fits RetroArms V3 gearboxes and common zinc-alloy AEG shells

Technical specifications & package contents

1× CNC hop-up chamber for AK V3 (EN AW 7075)

1× 7075 aluminum adjustment lever

1× 7075 aluminum pushing lever with spacer cut

1× 7075 aluminum collet nut (10 mm wrench required)

1× elastomer sealing O-ring

1× ABS C-clip lock

1× ABS plastic pin

2× M2.5 × 3 mm steel screws

1× M3 × 12 mm steel screw (HRC 8.8)

User benefits

Zero-play barrel alignment for pinpoint accuracy in semi- and full-auto fire

Rapid installation/removal via collet nut and C-clip

Reliable gas seal and minimized internal clearance for consistent feeding

Broad compatibility with OEM and aftermarket hop-up parts

Warnings & compliance
Intended for AK V3 electric softair replicas (also fits common zinc-alloy shells). Always check 20.1 mm nozzle fit and bucking condition. Keep out of reach of minors. Avoid prolonged exposure to heat or humidity. Do not disassemble or modify CNC parts; seek professional service if needed.