If I had to guess, that’s a FightLite Raider.

The receiver set is designed for areas where traditonal scary black rifles make the soy and tyrant classes all nervous. The upper contains a modified bolt carrier group that functions more like one in a semi automatic shotgun, in that the bolt recoils back into the stock assembly using a modified spring and shortened carrier group.

IIRC, it uses a modified Remington model 11 stock, so ultimately it comes out looking like a more traditional Fudd rifle.

Well, the company had the earnestly cool idea of modifying a shockwave birds head grip to accommodate that recoil assembly, and the raider was born.

I had the opportunity to shoot one; surprisingly manageable, but also awkward as hell. Used it with a red dot, which is a complete necessity.

You are best off getting two of them and wearing them in a cross bandolier like a pirate, Then drawing them akimbo and firing wildly towards your enemies.