[smokingfrog]

Also piston-driven and supposedly easier to change calibers (i.e. the barrel). I wonder if he used 5.56mm or some other caliber like 300 blackout?

[NFHale]

Piston IS better... Sig makes some fine equipment, for sure.

So, for all intents and purposes to the mediots, it’s an EEEEVVVVIL AR15 (gasp!) (choke!) (sob!)