The Rival Arms® 9mm Conversion Threaded Barrel for Gen 3 / 4 Glock® 22 Pistols is built with high-quality 416R stainless steel, precision polished, and finished with a corrosion-resistant PVD coating. This match-grade barrel boasts 1/2x28 threads for comparability with your favorite muzzle devices such as compensators and suppressors. This drop-in barrel boasts 6 groove rifling and a 1:10" twist for unmatched accuracy and superior precision at the range or during self defense. Thread protector included.