The tiny Sig P238 fits in just about any pocket.
Remington 870 Express Tactical with a Magpul Industries stock and forend, and a Mesa Tactical carrier.
A custom built AR: Detroit Gunworks matched upper and lower receivers, Magpul UBR Stock, Spike's Tactical H2 buffer, Magpul MOE+ Grip, Noveske 14.5 inch barrel, topped off with an AAC Silencer .
The incredibly cheap yet ridiculously fun Springfield 1929.
Beretta 92FS Compact,
Smith & Wesson M&P15 Sport