http://tml.travellercentral.com/hillberg/index.html: A four-barreled, break action, pepper box style shotgun, the Winchester Liberator would essentially be the ultimate of close-quarters guns. While it eats through ammo extremely fast (firing four shots at once), the Liberator can pretty much eat through any enemy's defenses.
http://img406.imageshack.us/img406/9605/fog2sr3.jpg: Essentially a mine-based version of the Incendiary Grenade. After an enemy activates the Incendiary Mine, it explodes spewing flaming napalm everywhere.
http://upload.wikimedia.org/wikipedia/commons/6/6b/Schrapnel_allemand.JPG: One of the most famous mines of all time, the Bouncing Betty launched a canister full of shrapnel into the air till it got to about waist height, and then exploded. This maximized the explosion to a 360 degree explosion, and it made it nearly impossible to duck and survive the explosion. Once an enemy steps on (or near) the S-Mine, it'd bounce into the air and explode a moment later.
http://www.traderscity.com/board/userpix8/7230--pneumatic-air-impact-wrench-swing-hammer-2.jpg: Once a pneumatic tool for building, it now serves as an automatic, rapid-fire, melee tool of destruction.
http://executiveeducation.wharton.upenn.edu/wharton-aerospace-defense-report/images/raygun.jpg: A small energy pistol run off of energy cells, the Sonic Blaster isn't a very devestating weapon, but it can easily cripple limbs. The projectile would look similar to a Mirelurk's blast.
Infernal Glove: A small glove with a tiny, palm-sized gas canister on the back of the hand, a small lit torch by the gas canister, and a pressure plate by the knuckles. When pressure is applied, the gas canister releases a spray of a flammable gas that is instantly set ablaze and spreads onto the enemy.