Glock's Generation 5 pistols evolve on perfection to deliver improved functionality and rugged reliability. From their flared magazine wells, re-textured grooveless grips, and corrosion-resistant nDLC finish to the new marksman barrel, this is a whole new kind of Glock. And it's built around a new and improved version of the classic Glock factory magazine. Featuring full-length steel inserts, numbered witness holes and impact-resistant polymer construction, Glock magazines are known for their ultra-reliable feeding and consistent performance.