Anyone know anything about the Equation Barrel set?

[Croix71]

I'd say Freak for now. Just because I haven't seen enough feedback about the equation barrel.

[Aliens-8-MyDad]

thing is, there is more combinatons availible than there is for the freak... first there are 2 kinds of backs, concave and normal... these come in either 3 sizes or one size that can hold 6 inserts, then there is 3 mid sections in 3 sizes and u can get them in ported or non and finally there is 5 muzzles and u can get any peice in any color...