M363 sticky detonator
From Halopedia, the Halo wiki
Template:New Content Template:Weapon Infobox The M363 Remote Projectile Detonator is a UNSC weapon that appears in Halo 4.[1] Sized like an ordinary sidearm, the weapon fires a magnetic explosive which can be manually detonated by the operator.[2] It appears similar to the Grenade Launcher in Halo:Reach