RHD VFC Nozzle with Flux Core (C-Lock)

Improve the gas seal and feeding of your VFC M4 or HK416 gas blowback rifle with the RHD Flux Core loading nozzle. It is a complete polymer nozzle assembly, with RHD's Flux Core return spring and an adjustable flow valve (NPAS, or Negative Pressure Adjustment System) already fitted, so it simply replaces your rifle's original nozzle.

A tighter gas seal

The Flux Core spring works in both directions, pushing and pulling. Once fitted, it holds the nozzle slightly forward, keeping it pressed against the bucking right up until the shot. That minimises gas leaking past the BB, so more of each shot's gas goes into firing it.

Reliable feeding, stable cycling

In the last part of the bolt carrier's forward travel, the spring helps the nozzle push the BB firmly into the chamber, for more reliable feeding and more stable cycling. RHD spent two years field-testing and gathering data on the Flux Core design before release.

The Flux Core nozzle is for VFC GBBR owners who want more consistent performance from their rifle, as a drop-in replacement for the stock nozzle. Browse our gas blowback rifle parts, VFC range and the rest of the RHD range.

Specifications

• Compatibility: VFC M4 and HK416 V2/V3 GBB series, including:
  • VFC M4, MK18, URGI, M733, M16, BCM and T91 GBB
  • VFC HK416D, HK416A5 and M27 IAR GBB
• Not compatible with:
  • VFC "EVO" AR GBB system (L403A1/KS-1)
• Spring fixing: C-clip (not included; reuse the one from your rifle)
• Length: Approx. 97mm
• Materials: Polymer, steel and aluminium alloy
• In the box: 1 loading nozzle assembly