There are two key features I would like to point out.
1. Thumb Screw Pressure Adjustor for different barrel length or suppressor setup. The thumb screw simply increase or decrease the internal blow back gas pressure for the appropriate operation.
2. Composite Piston Dish pushes the bolt carrier group for shell extraction and feeds magazine bullet to the chamber. It completes one operation cycle without the need of buffer tube. This feature helps reduce weight and allows the attachment of folding stock.
3. All key Piston + push arms components are made with heat resistance light weight composite materials.
4. Hopefully the reduction of recoil would be able to achieved by the absent of buffer spring
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