The GLOCK® 19 Gen5™ MOS 9mm Semi-Auto Pistol is probably the staple compact carry firearm that all are measured by. Sized between the sub-compact 26 and the full-size 17, the 19 is a happy medium. It's the choice firearm of many law enforcement agencies worldwide and a very popular concealed carry firearm. For several years now, many have been getting their slides milled out by gunsmiths to cleanly attach a sight to their pistol. The MOS (Modular Optic System) has a slide cut out and 4 plates to accommodate just about any popular RDS (Red Dot Sight). Some still prefer a custom cut, while many prefer the ease of use with the MOS system. The G19 MOS comes with the same popular upgrades of all Generation 5 GLOCK pistols like the Glock Marksman Barrel and overall elimination of leaf springs, which have since been replaced by new coil spring designs for increased longevity and reliability. The slide release is ambidextrous and the magazine catch is reversible. The slide has factory serrations on the front and back. Plus, the front of the firearm is now beveled for easier reholstering. The G19 and G45 share holsters. The slide and barrel feature GLOCK's latest ion-bonded nDLC coating, which is a truer black to previous generations with improved ability to function in dry conditions. A long-requested feature, the front strap no longer has finger grooves, allowing any finger size to fit comfortably around the grip. GLOCK's MBS (Modular Backstrap System) allows you the ability to add or remove additional backstop pieces, including a beaver tail for those with larger hands. This eliminates slide bite. In front of the trigger guard you'll also receive an integral accessory rail for a wide variety of light and laser accessories. Includes three magazines.