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HDR- the "HAO's Designate Rifle " is HAO's latest skeletonized style receiver set. NewWolf Grey anodized color!


2023 version is PTW infinity compatible and comes with RS spec grip adapter.

The difference of the Kumi and Infinity version is only about the pistol grip and selector.

The receiver is the same,Kumi490 &  infinity-compatible 


CNC machined from an Alloy 7075-T6 billet which is as same material as a real firearm. Featuring the ambi function we learn from making our masterpiece- 416A5 kit, to bring the Ambi setting into this lightweight style receiver set.


#FullHAOS ! 


*Optic sight, Geissele Mount not included 

Term Of Use:

All products sold by HAO are intended for Airsoft use only. Other uses are prohibited. Any modification including painting, marking, or wiping the cover/instruction stickers is prohibited and may be a violation of the law. Customers assume full legal liability for any modifications they perform, absolving HAO of any responsibility.


  • Anodizing/surface treatment disclaimer :

    Anodizing is a serious chemical process that is fairly unstable. The shade of color can vary batch by batch. We do our best to make the color as correct as possible but we can NOT generate if the shade meets your imagination. Also to be noted that every monitor has its color differences. The color of the object and the color on your computer/ mobile device may be different. 

HDR Complete kit for PTW

    • CNC drilled Alloy 7075-T6 billet Upper
    • CNC drilled Alloy 7075-T6 billet Lower
    • CNC 5 machined BD-style gas block & gas tube
    • CNC lathed, BD style 16", 14mmCCW alloy barrel
    • CNC machined HK416 Ambi-Charging Handle recoil Full system
    • CNC lathed alloy barrel nut
    • CNC drilled/lathed 13.7" FLR handguard
    • CNC drilled 416A5 Ambi bolt catch
    • CNC drilled 416A5 Ambi mag release
    • Hydraulic Pressed 416A5 Enhanced Ambi Sling End Plate
    • CNC lathed HAO SPQR Lightweight Stock
    • CNC lathed,drilled BD-style Steel Black Takedown pins
    • CNC lathed, drilled BD style, black ambi selectors 
    • CNC lathed 416F style muzzle brake
    • Plastic Polymer injected Black V7 grip 
    • HAO's Advanced SUS303 Cylinder- M90
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