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Worker 14 kg Spring for Nerf Longshot - Blaster-Time
Ultimate Guide to Springs for Springer Blasters – Frontline Foam
Amazon.com: WORKER Mod Modification Upgrade Spring Sets for Nerf Rebelle Sweet Revenge and Nerf Zombie Strike Hammershot Blaster : Toys & Games
Blasterparts Upgrade Spring for Nerf N-Strike Longstrike CS-6 - Blaster-Time
WORKER MOD Plunger Rod Plus Spring Plug Upgade Metal kits for Nerf Longshot Terminator Modify Toy
For the rival knockout, you can change spring by drilling a hole at the top, then unscrew like a longshot plunger head. Bad news, spring dimensions are quite specific. Kronos 18kg from
Amazon.com: WORKER 14KG Upgrade Spring Silver for Nerf Rival Kronos (XVIII-500) : Toys & Games
Blasterparts - Modification spring for NERF Maverick REV-6 - blasterparts.com
The NIC Spring Database - General Nerf - NerfHaven
Worker 12 kg Spring for Nerf Retaliator - Blaster-Time
Foam Focus K26 Universal Spring full length (28 cm) - Blaster-Time
Amazon.com: NERF Hyper Evolve-100 Blaster, 70 Hyper Rounds, Spring-Open Instant Reload Hopper, Up to 110 FPS Velocity, Eyewear Included : Toys & Games
Worker 5kg Spring Upgrade Kit for Nerf Slingfire - Blaster-Time
Amazon.com: Nerf Pro Gelfire Legion Spring Action Blaster, 5000 Rounds, 130 Hopper, Protective Eyewear, Slam Fire, Ages 14 & Up : Toys & Games
Worker 12 kg Spring for Nerf Retaliator - Blaster-Time
Guide to Springs for Nerf Springer Blasters - YouTube
Amazon.com: WORKER 18KG Upgrade Spring Silver for NERF Rival Jupiter XIX-1000 : Toys & Games
K26 Spring 11" with square ends (BETTER than McMaster) – Out of Darts
Rival Vision Spring (135+ FPS) – Out of Darts
Blaster Mod Upgrade Spring for Nerf Modulus Longstrike Blaster - BlasterMOD
