NERF Nailbiter Mod Guide (Internals, Spring Upgrade) | Walcom S7
The Nerf Zombie Strike Nailbiter is an amazing little blaster, but can it get even better? It's a pretty easy blaster to disassemble, and then it's forgiving plunger system makes just about any spring upgrade possible.. but how hard can it actually hit with a decent spring?
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Walcom S7
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