Worker Mod 6KG Spring Coil Sets for Nerf Rebelle Sweet - Etsy
Worker No.217 Mod Kit Set For Nerf Hammershot Modify Toy - Gun Structural Accessories - AliExpress
Hammertime! a visual comparison between the hammer primes I had lying around: doublestrike, lawbringer, sweet revenge, 4victory and hammershot : r/Nerf
Nerf Zombie Strike Hammershot Modified – Blaster Barn
Rebelle 4Victory using Hammershot Upgrade Spring: 3d printed Adapter : r/ Nerf
Amazon.com: NERF Zombie Strike Hammershot Blaster, 5 Official Darts - Color Scheme (Amazon Exclusive)