I had heard rumours a ultra high pressure 5.56 was being texted in the US, I believe using a 2 part steel and brass casing like the new 6.8 does. I saw a video on it a while back and it was running at 100k psi but still apparently worked in standard AR/M4s with very little modification and pushed a 77gr at something like 3500fps or so. Wasn't sure if it was BS or not, but seems like it may have been legitimate.
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u/Animagical Jun 05 '26
Is this chambered in 5.56 or is it similar to the newer US rifles in 6.8 Fury?