Not sure about your LARP but ours allow for Nerf brand styles of guns.  The problem is when you're shooting down zombies or mutants at night the ammo gets lost in the underbrush.  These darts glow to solve that problem and give the post apoc radioactive-looking glow that says you go anywhere the adventure leads.
Warning: no fire
Age Range: 12-15 Years,> 6 years old,8-11 Years
Type: Toy Pistol Gun
Material: EVA