SA TDC Magnus(TM) M4 Hop-Unit Unit and Helium(TM) Flat Bucking – Black

Specna Arms TDC Magnus(TM) M4 Chamber
Want to increase the accuracy of your AEG M4? Looking for a chamber that provides a stronger and more stable pressure even with heavier BBs? Trying to eliminate the issue of curving shots and get consistent backspin? The TDC Magnus(TM) hop-up chamber paired with the Helium(TM) Flat bucking is exactly what your rifle needs. TDC pressure acts vertically and directly above the barrel window, removing inaccuracies typical of standard lever-based systems. The Flat bucking, thanks to its smooth internal surface, ensures a wider contact patch, stronger backspin, longer range and excellent accuracy.

Example of assembled chamber (inner barrel not included)

Key Features

TDC pressure:Vertical pressure from above – no levers at odd angles, just maximum accuracy.
Helium(TM) Flat bucking:Nubless design with a wide contact surface for strong and stable backspin.
Improved range and accuracy:Ideal for heavier BBs (0.30 plus g).
Nylon:Durable, lightweight chamber resistant to rough handling.
M4 / AR15 compatibility:Designed for most AR15 AEG platforms.

Technical Specifications

Chamber material: Nylon
For rifles: M4 / AR15 AEG
Pressure type: TDC (vertical top-down pressure)
Bucking type: AEG Flat

Package Contents:

Complete Magnus(TM) M4 hop-up chamber
Helium(TM) Flat hop-up bucking