This is the Cobra Sniper, this custom is based on one of the pre-production drawings that can be seen in the YoJoe site.
I think it was a great idea, I don't know why it was scrapped, although it is a bit similar to maybe SAW Viper and Rock Viper, the concept of a Cobra Sniper hasn't been correctly used yet.
This is the original artwork;
This is the custom;
I used O-Ring vintage parts; Range Viper torso, Dusty arms, Lampreys legs, and I don't remember where it came the crotch from. The backpack is from doc, with a half-repaired with epoxi weapon.