I am considering a light rifle for the truck the will not cost an arm and a leg. I already have 7.62x39, 223 and 9mm ammo galore. I think the Siaga will use the AK mags. The Kel-Tec 223 I believe will us my AR15 mags and the KT Sub2000 9mm G19 compatible should use all the G19/17/18 Mags that I have. Defense, the wayward coyote/possum/bobcat would be the usage. What are the opinions here: 7.62x39mm Saiga, Kel-Tec Su16 Sport Utility 223 16", or Kel-Tec Sub2000 9mm glock 19 mags????