Nerf gun. Great colors!
Custom built aliens pulse rifle
Wow, that's ... strange. But it would be cool indeed.
Mass Effect Style. Nerf Gun Mod.
Ultimate Mass Effect Style Nerf Stampede by BCJFLA76 on Etsy
Custom Painted Halo Reach Nerf Stampede In UK in Toys & Games, Outdoor Toys & Activities, Other Outdoor Toys/ Activities | eBay
Mass Effect-themed Nerf Stampede by Brian Johnson (Johnson Arms)
Yah, I'm pretty certain Jon has this exact nerf gun!!! NERF N-Strike Stampede ECS-50 Blaster