and this increases with the Pyromaniac perk, spare parts to repair it are common and it uses no ammo since it's a melee weapon.

Why? Because It deals high damage and it sets enemies on fire and deals 2 damage per sec. Downside is, repair and ammo is not common. Why? Because it fires 8 mini nukes at once and scatters them in a large area of effect, good for taking out whole raider camps, Behemoths, Enclave camps, Old Olney deathclaw mobs etc. Although the firelance degrades faster than the Alien Blaster. (most people agree that these are the weapons that deals most damage per shots) the Alien Blaster is stronger than the Firelance (Firelance without perks) but the Firelance is stronger with perks such as Xenotech Expert and Pyromaniac due to Firelance having a incendiary effect on targets like the Chinese pistol.

Why? They deal high damage and has the highest critical chance of any weapon. The downside is that it degrades rather quickly and spare weapons are hard to come by since it's a gatling laser. It's the one weapon in the game that deals most damage next to the firelance or Alien blaster. Why? It deals high damage, ammo is common and it's good against enemies with armor. Other reasons why this is number one: It looks good, it has a nice 'ring' sound in VATS and it is based on Abraham Lincolns actual Henry. The rifle holds 15 rounds before reload is needed. 44 before breaking, and the repair is easy to fix since it can be fixed with regular hunting rifles and lever action rifles (lookout). The spread is 0.00 (even out of v.a.t.s.) and with the following perks: Sniper, Commando and concentrated fire it's even more deadly in V.A.T.S. Why? Because it deals high damage, and even higher critical damage and increased critical chance in sneak.

Fallout 3 unique plasma rifle