2021 Update: All HAO PTW receiver begin marhing into the PTW Infinity compatible generation.
We have update the motor/grip area to use both Kumi motor and RS spec grip adaptor.(Pic3.)
The inner side of the lower reciever already adjust to fit the wiring for the Infinity gear box.(Pic4.)
Kit comes with the PTW Infinity RS Spec grip adapter.
 
CNC machined from an Alloy 7075-T6 billet which is as same material as real firearm.
This time we have developed a new ambidextrous structure for the PTW AR system, unlike the our 416A5 style structure . The ambidextrous on the BD556 ambi and RBR is more exquisite, it shows the craftsmanship of HAO's R&D dept.
(Photos not update yet)
 
You can find the Infinity spec safety selector here:
https://www.haoptwart.com/product-page/hao-s-2021-bd-style-ambi-selector-for-ptw
 
 
Anodizing / surface treatment disclaimer from Geissele for reference :
https://geissele.com/anodize-shade-variations-and-finish-methods
 
Made in Taiwan
BB type: 6mm 0.2g BBs
Power source: 11.1V PTW
Power: 90 m/s = 0.81J with 0.2g BBs
J / cm2:  2.835 J/cm2
No primer using function