![]() ![]() The G40 standard magazine capacity is 15 rounds. The Glock polymer-bodied magazines will drop free from the pistol when the release button is depressed. The extractor serves as both a visual and tactile loaded chamber indicator. The only external controls, aside from the trigger, are a small slide stop lever above the grip and a magazine release button behind the trigger guard. All that is necessary is to follow the basic safety rule of keeping your finger off of the trigger until you intend to shoot the pistol. Nothing needs to be remembered or manipulated by hand to render a Glock pistol safe before or after firing. There are no external safety levers to fumble or forget. All safety features operate automatically. Glock pistols incorporate three internal safeties: a trigger block safety, a firing pin safety and a drop safety. All Glock pistols, from the smallest to the largest, are based on the same Glock Safe Action and most internal parts are interchangeable between models. The red dot sight attaches directly to the MOS plate.Īs with previous Glock pistols we have reviewed, the G40 is easy to operate. To mount an optical sight, such as the Leupold DP-Pro, you simply unscrew a plate, which is located directly in front of the rear sight on top of the G40's slide, and substitute one of the MOS plates (#08 in our case). The DeltaPoint Pro is made in the USA and comes with the Leupold full lifetime guarantee. Its base is almost exactly the width of the G40's slide (1-1/16 inches) and it weighs only 1.9 ounces with battery installed. This is a sophisticated and very high quality little red dot sight, measuring only 1-3/4 inches long and about 1-1/4 inches high. To take advantage of the Glock MOS system, we requested a DeltaPoint Pro prismatic red dot sight from our friends at Leupold. The screws and a Torx wrench for mounting these plates, along with mounting instructions, are included. These Glock MOS adaptor plates are numbered 05 (for Docter, Meopta and Insight), 06 (for Trijicon), 07 (for C-More) and 08 (for Leupold). Inside, in addition to the pistol, was a cleaning rod and brush, three magazines, magazine loading tool, gun lock, the usual literature and instruction manual and four numbered Glock MOS adaptor plates for use with optical sights. When it arrived, it was packaged in a foam padded, double hinged, double latched, plastic carrying case. It was with considerable anticipation that we waited for the arrival of our Glock 40 Gen4 MOS test gun. Unlike most pistols, the G40 MOS comes ready to accept optical sights. (You will need a small jeweler's screwdriver to adjust the rear sight's tiny windage and elevation screws.) The square front sight is marked with a white dot and the rear sight "U" is outlined in white. ![]() Not only does this Gen4 Glock have a hunting length barrel, it comes with fully adjustable Patridge type open sights. The "long slide" G40 MOS (Modular Optical System) is Glock's biggest and most powerful offering, a 10mm field pistol with a six inch barrel. So do Norma, SIG, Cor-Bon, PMC and most specialty ammo companies. 38 Special cartridges.)Īll four of the major US ammunition manufacturers, Remington, Winchester, Federal and Hornady, offer 10mm Auto factory loads. Of all the commonly available cartridges for semi-automatic pistols, the 10mm Auto comes closest to the power, trajectory and versatility of the. Having previously reviewed a couple of Glock 20s and a SIG P220 in 10mm Auto caliber, we have come to regard the Big 10 as perhaps the most versatile of the commonly available autoloading pistol cartridges and one of the most accurate. By the Guns and Shooting Online Staff Illustration courtesy of Davidsons, inc. ![]()
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