Second strike capability is a nice positive of hammer fired guns.
Also, there is no best. Each unique circumstance may have a best option, and that can change by the second.
I'm a big fan of GT's channel, but this new video he just put out is over the top. Camera tech has become unbelievable.
*Make sure to watch the intro*
Enjoy.
Without provisions for attaching a sleeve to the core, I'm with you. It looks like he was trying to capitalize on the monocore look, but I don't see a way that he intended a body sleeve to be attached.