Gen12 SP-BLK Experimental shell ejecting toy

What is “SP-BLK”, you might ask. Well, basically this is a non-shooting toy that utilizes the energy of a spring to achieve automatic shell ejection.Each shell contains a main spring that can be pre-compressed. Gen12 model is the first prototype, not perfect enough, not recommended to build it. The gun itself(receiver) does not meet DPMS or AR10 specs, which means, it is safe and will not be classified as a firearm. video: https://youtu.be/Xic5Yvsfyw8?si=LqLu9fVUAJjnz3Wk

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