If you can't wait for Tokyo Marui to release a version an HK416 version of their MWS Gas Blowback, then the best and so far expensive recourse is get a conversion kit. HAO Industries got available a HK416C Conversion Kit which will do damage to your wallet by US$1,500... "HAO's 416C conversion kits for Marui MWS are CNC machined from an Alloy 7075-T6 billet which is as same material as real firearm.

In this model of 416 , you will have 9" one piece steel gundrilled barrel end with 1/2-28RH thread , CNC machined 416D style gasblock, Full RS spec 416C version hanguard, Full set of 416C collapsible stock, Ambi sling end plate, Plastic-polymer injected V7 grip for GBB.

• CNC drilled Alloy 7075-T6 billet Upper
• CNC drilled Alloy 7075-T6 billet Lower
• SUS304 gas block & gas tube (416C length)
• CNC lathed, Gun drilled 9" Steel barrel
• CNC lathed Steel barrel nut
• CNC drilled 416C type Handguard
• CNC lathed Decoration pins
• CNC lathed  Steel Flash hider knobs
• CNC lathed drilled Takedown pins
• CNC lathed drilled HAO's HK416 style ambi selectors
• CNC lathed 416C/F style muzzle brake (With 1/2-28RH thread)
• 416C type collapsible stock
• CNC lathed 416 ambi charging handle
• Plastic Polymer injected 416 V7 grip
• 416AC Ambi Sling End Plate
• SUS EDM wire cut light weight BCG stopper"