Love the Sub2000 in 9mm. You can fit it in a nice sized laptop computer bag or business case. Great home defense gun, plinking gun and excellent "car gun"
NOTE: This is no substitute for a serious battle rifle or .45 cal 1911 and such.
I highly recommend keeping it stored in your vehicle, with 3 17rd mags (from CDNN Investments), plus the standard 10 rd mag already locked. You can easily lug this package around to and from your car or truck, floor boards, house, work, hotel, where ever, without attracting any attention.
I down load my 17 rd mags by two since the springs are so dang strong, and VOILA!....have 55 rounds "at the ready" 10 in the grip and 3 x 15 rds in the bag. Funny thing is, though, if you ever have to use 55 rds of ammo somewhere OTHER than the range, you better be moving your butt quickly to some place with serious cover while doing so, or to an armory with 7.62x39mm, 30-06, .50cal or mortars!
Pick one up for $325 or so, plus a few accessories and you have a FUN, but highly functional medium-caliber carbine. Never had a single hiccup while at the range. However, I never used much more than the Winchester White Box, and some 100 rds of JHP, just to test it out...nothing but WWB 9mm FMJ since.
Love it, love it, love it.