Rotary CNC Hop-Up Chamber for SVD/SVU

The Begadi MONOLITH CNC Hop-Up unit for SVD / SVU takes your replica to the next level. Machined from high-strength 7075 aluminum, this unit offers precise construction and perfectly smooth pressure adjustment via a 360° adjustment wheel with an O-ring, eliminating any play or binding — common issues found in the original system.

The key advantage of the MONOLITH lies in its TDC system (Top Dead Center), where pressure is applied exactly through the center in a consistent manner, without causing unwanted upward shots. The fine thread allows for extremely precise tuning — one full turn of the adjustment wheel equals 0.35 mm of movement.

Thanks to the enlarged CNC POM C-clip, which prevents barrel twisting, this unit is ideal for the longer inner barrels commonly used in SVD / SVU replicas.

Compatibility and adjustment options:
Compatible with 5 mm and 7 mm Hop-Up windows
→ use the 5 mm nub for the original inner barrel
→ use the 6 mm nub for barrels with a 7 mm window
The 7 mm system is suitable for heavier BBs (0.36 g and above)

Supports both Flat-Hop and R-Hop setups

Additional benefits:
Plug & Play – no modifications required, direct fit

Works with original magazines

Eliminates the need for side barrel screws

Summary of advantages:

• Precision CNC-machined from 7075 aluminum
• Smooth 360° adjustment wheel with no play
• Compatible with multiple setups (5/7 mm, Flat-Hop / R-Hop)
• No modifications required – easy installation
• Improved shot consistency