An Isomagnetic Disintegrator was a shoulder mounted energy weapon that was used by Starfleet by the 24th century.

The technical specifications of these weapons were classified under Starfleet Security Directive 24168.9. However, what was known was that they made use of a portable magnetic charge inducer which fired a beam of isomagnetic energy that disrupted a targets electromagnetic field. The effects depended entirely on the setting being used as a low setting stunned a target by targeting their inner ear whilst a moderate setting cause a temporary imparement of the central nervous system and the highest setting turning a target into dust as well as static by changing its protonic charge. (Decipher RPG module: Starfleet Operations Manual)

Federation Starfleet hand-held weapons
Energy weapons	type-1 phaser/hand phaser	Sestra phaser I • Atalskes phaser III • Sestra phaser IB • mark V personal phaser
	type-2 phaser/phaser pistol	Sestra phaser II • Atalskes phaser IV • Sestra phaser IIB • mark VI battle phaser • phaser (alternate reality)
	type-3 phaser/phaser rifle	mark VII phaser rifle • compression phaser rifle • enhanced compression rifle • phaser rifle (alternate reality)
	miscellaneous	assault rifle • infinity modulator • isomagnetic disintegrator • laser pistol • laser rifle • neural disruptor • phase pistol • sniper rifle
Projectile weapons		compound grenade launcher • photon burst • quantum burst • TR-116 • TR-120