Why no Jr Carabine in .223???

[Blastattack]

the 1907 351 wsl is a blow back that runs at max of 52,939 psi even though antique and heavy

.351 WSL is 37 ksi to 39 ksi. Still higher than most cartridges of it's age but is certainly is not over 50 ksi.

 

[Curly1]

https://www.youtube.com/watch?feature=player_detailpage&v=9_pWNjuZj30

 

[lone-wolf]

Yea, that looks like a firearm design that's bagging for a quad rail and 'just right' slapped onto it.