here's my late 70's 12g/18" LE issue Mossberg 500 riot gun. Found a really nice original Mossberg 500 28" ventilated rib, twin bead/wide rib target barrel choked Mod. Had it out yesterday and smashed all but a few 16 yard ATA targets. Bought the original gun for $175, then found the additional 28" target barrel on eBay for $102. $277 for the whole package. Not too bad...