Glock 30, .45 Auto: While many prefer the Glock 26 as their sub-compact 9mm carry because it offers 10 round magazines, it begs the question: why not carry a Glock 30? The Glock 30 is similar in size, but fires .45 Auto with the same 10 round magazine capacity. The weight is certainly an issue to consider, as it nears 34 oz when loaded, but the punch it can deliver is clearly superior to its 9mm brethren.