The Glock 23 combines compact dimensions for both open and concealed carry. Featuring Glock's Safe Action system; polymer frame with hardened steel guides; slide stop lever and the magazine catch are easily operated with the shooting hand; advanced surface treatment- reduces wear and tear and it makes it corrosion resistant; mechanically locked and cold-hammer forged barrel; the extractor serves as a loaded chamber indicator to comply with the laws of certain states and its position may visually and physically indicate whether there is a cartridge in the chamber of the pistol. The Gen5 model features nDLC surface finish, frame texture, reversible magazine catch, ambidextrous slide stop lever and the GLOCK Modular Backstrap System. MOS features a slide that is precision machined to provide a mounting system for popular optic sights. With multiple adapter plates (sold separately), you can quickly and easily mount miniature red dot sights.