apparently x shot knock-offs exist, found somewhere on olx (polish knock off of ebay i suppose) : r/Nerf
NERF Elite Titan CS-50 Toy Blaster -- Fully Motorized, 50-Dart Drum, 50 Official Elite Darts, Spinning Barrel -- for Kids, Teens, Adults - Walmart.com
Licensed High Qulity Nerf Super Soaker Tri Strike Crossbow Water Gun Blaster Toy - Toy Guns - AliExpress
Nerf - Brinquedos - Jogos - OLX Portugal
Nerf guns can lead to serious eye injuries, doctors warn - The Irish News
Amazon.com: Kids Tactical Vest Kit for Nerf Guns N-Strike Elite Series with Refill Darts, Reload Clips, Tactical Mask, Kids Binoculars, Wrist Band and Protective Glasses for 3 4 5 6 7 8