Simply hook this TruGlo Hd Sgt 12-20ga up for a more precise target acquisition and enhanced precision. Featuring an ultra-tough construction and a reduced fiber diameter, the TruGlo Sight is built to last and will hold up to years of use. The TruGlo Sight For 12-20 Gauge is an ultra-low profile design that ensures the least amount of interference with your barrel, making it perfect for plain barrel guns. For an incredible way to make sure you are shooting with one of the best possible sights on the market, choose the TruGlo Sight For 12-20 Gauge Shotguns.