I recently acquired these “test shot” weapons from the Mega Bloks Halo line. Test shot refers testing the molds for pieces. Note the very different color choices for the weapons in the pictures. I was extremely happy to receive these given their rarity, especially the fuel rod gun since it’s only just been released to market.
The needler is brown if you can’t tell and the Spartan Laser is a dark grey. The all black flamethrower is also very cool!