Adam Savage's One Day Builds: Custom NERF Rifle - YouTube
Mando Mercs Costume Club - Yes, modified Nerf Guns can be used as approvable costume accessories, but the key word is MODIFIED and non-functional. Note the amount of changes made to this
How Modding Nerf Blasters Became a 3D Printing Business | Make:
Monkee Mods Nerf
4 Ways to Modify a Nerf Gun - wikiHow
Modified Nerf Blasters By JLCustomsCreations - YouTube
Hackers Mod Nerf Gun Into Crazy Weapon of Cushiony Destruction | WIRED
SSWI Modded Nerf DoubleStrike SHREDDER Tactical Barrel – Double Strike Mods – So Sick With It