I submit to you a weapon built with only the finest of materials (Iridium plating, diamond-honed guidance rails, etc.) and powered with the most noble of bodywear, the Lappack. This weapon uses energy drawn from the Lappack to power a series of electromagnetic coils (copper wire made from macerated copper dust and compressed, wound around a ceramic core <-- new material!) to propel pellets made from refined iron, magnetized with the handy dandy magnetizer and infused with redstone (glowstone optional) for that extra bit of burn. Yes, the ammunition is expensive, yielding only 8 shots per ingot, but no creature can withstand an assault of this magnitude! A peice of perfectly balanced, intricately formed refined iron is propelled at hyper-sonic speeds, superheated by friction, and slams into its victim with a force previously thought to be impossible. Or at the very least, utterly disgusting. Due to the insane amount of power required to operate this weapon, it will drain a Lappack in 100 shots and cannot maintain a charge internally. Therefore it cannot, sadly, act as a standalone weapon, but once the weapon has a power source, nothing can stand it its way. The MAIMER also requires a cooldown period between shots for several reasons, including complete meltdown of the main components, severe burns to the hand, face, and neighborhood, and a really bad smell. Please do not try to power this weapon with lava. Let us just say it doesn't work very well and leave it at that. There have been reports of the user of one of these marvels of destruction feeling some adverse health effects due to repeated exposure to magnetic fields and perhaps some deafness due to a sudden increase in air pressure from the shockwave, but we here at Notcher* Weaponry feel that these reports have little to no merit, as the complainants generally are vomiting mutants with bulging eyes, and that just sounds to us like bad breeding. Thank you for your time, future customer.