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HAO's classic 416D conversion kits for Marui MWS are CNC machined from an Alloy 7075-T6 billet which is as same material as real firearm. In this kit, you will have 10.4" one piece steel gundrilled barrel end with 1/2-28RH thread , CNC machined and 416D style gasblock, Full RS spec SMR 416D quadrail, Full RS spec steel made barrel nut and 416D type Castle nut ,Hydraulic pressed Enhanced Ambi sling end plate, Plastic-polymer injected V7 grip for GBB , CNC turned OTB buffer tube.


This time we also bring you out the 6061-T6 MWS bolt case (Ecoline) with Hard Anodizing 

Matte Black HK& G style BCG for your choice !
Check& Buy here:


Anodizing / surface treatment disclaimer from Geissele for reference :

HAO 416D Conversion kit for MWS GBBR

    • CNC drilled Alloy 7075-T6 billet Upper
    • CNC drilled Alloy 7075-T6 billet Lower
    • SUS304 gas block & gas tube
    • CNC lathed, Gun drilled 10.4" Steel barrel
    • CNC lathed Steel barrel nut
    • CNC drilled Handguard- Standard quad
    • CNC lathed Decoration pins
    • CNC lathed  Steel Flash hider knobs
    • CNC lathed Steel Assist knob
    • CNC lathed,drilled Takedown pins
    • CNC lathed,drilled HAO's HK416 style ambi selectors
    • CNC lathed 416 style muzzle brake (With 1/2-28RH thread) 
    • CNC lathed OTB buffer tube
    • CNC lathed 416 ambi charging handle 
    • Hydraulic Pressed 416A5 Enhanced Ambi Sling End Plate
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