Here's what the codes that came with Halo blasters unlock in Halo: Infinite! : r/Nerf
Nerf Halo Mangler Review | Blaster Hub
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Nerf Halo MA40 Is Out Thursday, Includes Halo Infinite Bonus - IGN
Halo Nerf LMTD Needler Dart-Firing Blaster
Amazon.com: NERF Halo MA40 Motorized Dart Blaster - Includes Removable 10-Dart Clip, 10 Official Elite Darts, and Attachable Rail Riser, White : Toys & Games
Official NERF Halo Mangler E9273 [ 6-Dart Drum Barillet ] NEW 630509952205 | eBay