The 4UAD 4uantum Magnus Pro AR, is 4UADs attempt to create a leading standard for TDC Hop-Up chambers. Aimed for high performance, consistent results, the Magnus Pro features a tri-patented design solution, featuring a TDC yet user-friendly hop-up chamber that is easily accessible any time for VFC and GHK users, instead of having to disassemble the handguard or have a proprietary tool on hand to adjust the hop.

Centre Locking System

Centering inner barrels with traditional hop up chambers wont always guarantee perfect central alignment with the barrel. With the 4UAD Centre Locking System, it uses a rotatable tensioning ring that pushes 3 knobs at the same time, which not only centres the inner barrel alignment, but a solid, wobble free inner barrel and hop up chamber, improving the consistency and accuracy of each BB shot.

Bucking Shroud

Featuring cuts that indicate how you should mount and align your bucking, it helps with centering your bucking alignment, stabilising and increase your output velocity.

True TDC Articulation with Quick Hop Up Adjustment Dial

A CNC machined TDC Control Ring Nub, the Magnus Pro TDC control ring has been designed with mimnimal wobble and a reliable contact between the rubber and chamber. The Magnus Pro comes with 2 control ring options, A Single Contact Control Ring for R-hop or large contact patches buckings, or a Double Contact Control Ring for stock or 4UAD Friction Pro buckings. Foregoing the need of keeping a proprietary hop up adjustment key on hand or having to remove the handguard to access the adjustment dial, the Magnus Pro replaces these options with a precise rotary dial that can be accessed through the ejection port of your VFC / GHK GBB, by simply having a 1.5mm hex key or similar, you just need to pull the dial towards you to increase the hop, or push away to decrease the hop.

Compatibility:

Requires Inner Barrel and Hop-Up Bucking (Neither Included)

Recommended to Use 4UAD 4UANTUM Friction Pro Hop-Up Bucking (GBB Spec.)

For VFC AR / M4 v2 and v3 GBB series;

Compatible with M4s v2 and v3 GBBR series.

Compatible with T91 GBBR.

Compatible with M4s with Adjustable Knob Hop Up (M733, XM177E2, M16A1, M16A2, M727 GBB Series).

Compatible with M4s with Adjustable Guide-Hop models (BCM MCRM, BCM Mk 2, Mk18, URG-I, SR16E3 GBB Series). Guide-Hop models require removal of the front Quick-Adjustment System, which includes dummy gas tube, connector rod and such. Will render Guide-Hop Inoperable.

Not Compatible with Stock VFC / Umarex (Elite Force) HK416 GBB Series (HK416 Gen 2 & Gen 3, HK416D, HK416A5, M27 IAR series). Compatible with HK416D if Outer Barrel and Gas Block is from Z-Parts (reverting Outer Barrel and Chamber Design to M4). Z-Parts HK416D shape items does not correspond to HK416A5, refer to Z-Parts Website.

For GHK AR / M4 v3 GBB series

Only for v3 GHK M4s with v3 Feed Nozzle/Bolt Group (i.e. M4, Mk 18, URG-I, DD PDW)

Not for v2 Feed Nozzle Spec and RA-Tech NPAS Nozzle/Bolt Group for GHK M4 v2 GBBR

Not Compatible with GHK / Umarex (Elite Force) 416 GBBR Series.

Included:

x1 4UANTUM Magnus Pro Precision TDC Hop Up Chamber Set (Knob Adjustment) for VFC and GHK AR / M4s

x1 Bucking Shroud

x1 Single Contact / Dual Contact Control Ring Nub