I've been interested in a compact carbine chambered in 9mm or 40 s&w ever since I shot a Beretta CX4 Storm. I find that there are very few options on the market.
For me, a pistol caliber carbine should have the magazine in the grip and utilize readily available, standard capacity magazines (15-17 rounds for a flush fit mag). Why? Options that move the magazine ahead of the grip extend the overall length by 3-4 inches. For me, the ability for the carbine to still have a 16" barrel in a compact size is one of the key benefits. Take that away and I'd rather just go for an AR-15. (feel the difference in length between an AR-15 with a 16" barrel and a Sub 2000 or CX4 with a 16" barrel.) The next issue is the magazine, I wouldn't be averse to giving the high point carbine a try, if it wasn't for the low capacity magazine.
Currently, I have the Kel Tec Sub 2000 to fill this role, Its very compact when extended (disappears when folded), uses Glock 17 magazines (good, since I have a G17). The biggest problem is the dirty blow back action. While mine has proven pretty reliable at the range, I don't feel comfortable using it as my go to gun in a defensive situation.
So what am I looking for? Basically for Glock, Smith and Wesson, Springfield, etc to release quality, well designed carbine options that utilize their existing magazines.
So what are you thoughts?