Quick view FOUR PEAKS Four Peaks Copolla, Fourpeaks 12007 Copolla Tr-12 12ga 18 S-auto 5+1 $329.22 The copolla tr-12 is a semi-auto mag fed ar styled shotgun.It is a piston-driven shotgun that is a great choice for home defense, tactical training, and shooting at the range.This shotgun features polymer flip-up sights, an aluminum rail, an ar-style... Compare Add to Cart