This is a list of shotguns in the game, all that can be purchased with hunter bucks are listed. Infrared is not listed as it is a gold upgrade. Also, reload time and fire rate does not change with upgrades so they are not listed. If a list of rifles is desired it can be found at the link.
http://ggnbb.glu.com/showthread.php?93473-Upgraded-riflesThe Jolly Shot: Holiday hunt weapon. Max level 5 Power 2167 Stability 65% Zoom x15.2 Capacity 16
Grantham Swordfish: Max level 5 Power 323 Stability 84.3% Zoom x5.2 Capacity 16
Clayton Raptor: Max level 5 Power 472 Stability 85.4% Zoom x6.6 Capacity 13
Maginot Marauder: Max level 5 Power 689 Stability 86.1% Zoom x8 Capacity 13
Maginot Maul: Max level 5 Power 1010 Stability 87.6% Zoom x8.6 Capacity 13
Western Vanguard: Max level 7 Power 1480 Stability 95.8% Zoom x10.2 Capacity 11
Hauer Thunderclap: Max level 7 Power 1630 Stability 95.8% Zoom x10.6 Capacity 13
Clayton Commando: Max level 7 Power 2165 Stability 96.4% Zoom x11.6 Capacity 11
G&H Trench: Max level 7 Power 3172 Stability 100% Zoom x12.8 Capacity 11
Westin Exterminator: Max level 7 Power 3488 Stability 100% Zoom x12.8 Capacity 13
Maginot Beach: Max level 7 Power 4645 Stability 100% Zoom x12.8 Capacity 11
Hauer Scythe: Max level 7 Power 5108 Stability 100% Zoom x12.8 Capacity 13
Plisskin Mamba: Max level 7 Power 6799 Stability 100% Zoom x12.8 Capacity 11
Gripton Barricade: Max level 7 Power 7481 Stability 100% Zoom x12.8. Capacity 13
Comments
http://ggnbb.glu.com/showthread.php?95726-Upgraded-Assault-Rifles-amp-Pistols