The Nerf Modulus system lets boys build their own blaster for each mission or battle. Attach the Targeting Light Beam upgrade to customize the Nerf Modulus blaster (sold separately). Get improved aim by honing in on targets with a green light beam for precision! With the full Nerf Modulus system, over 1000 different combinations are possible! Blaster and upgrade kits each sold separately. Nerf and all related properties are trademarks of Hasbro. Includes Targeting Light Beam and instructions. [PRODUCT FEATURES] â€¢,Customize the Nerf Modulus blaster (sold separately) â€¢,Part of the Nerf Modulus system â€¢,Targeting Light Beam attaches to blaster â€¢,Green light beam target-marking â€¢,WARNING: CHOKING HAZARD â€“ Small parts may be generated.