Glock 17 Austrian 9mm Semi-Automatic Pistol

GLOCK 17 Gen4 Semi-Auto Pistol Reliability and simplicity have made GLOCK® semi-automatic pistols a favored sidearm for law enforcement, military, and civilian use all over the world. The GLOCK 17 is a full-size service pistol, shooting the 9x19mm pistol cartridge (9mm Parabellum), a standard military round that's easy to find ammo for anywhere. The Gen4 Semi-Auto Pistol utilizes a dual recoil spring assembly that substantially increases the service life of the pistol, and helps take the snap out of recoil, reducing muzzle flip for faster follow-up shots. A modular back strap allows shooters to instantly customize the grip to an individual shooter's hand size or too cold weather gloves. Rough grip texturing on the Gen4's polymer frame provides a sure hold on the pistol when hands are wet or sweaty, and the enlarged magazine catch is reversible, accommodating left- or right-handed shooters. An integral accessory rail in front of the trigger guard allows for the attachment of a plethora of aftermarket tactical flashlights or laser sights. The dovetailed rear sight is drifted adjustable and has a white outline around its notch; the fixed front blade has a white dot. Sight acquisition is quick in any light. The GLOCK 17 Gen4 Semi-Auto Pistol is an ultra-reliable handgun that is easy to learn how to operate and maintain, making it an ideal choice for self-defense, whether it be for field carry or at home. The model 17 Gen4 comes with three standard 17-round magazines or three 10-round magazines that comply with various city or state restrictions on magazine capacity. The Glock 17 is a 9 mm short recoil-operated, locked-breech semi-automatic pistol that uses a modified Browning cam-lock system adapted from the Hi-Power pistol. The firearm's locking mechanism uses a linkless, vertically tilting barrel with a rectangular breech that locks into the ejection port cut-out in the slide. During the recoil stroke, the barrel moves rearward initially locked together with the slide about 3 mm (0.12 in) until the bullet leaves the barrel and chamber pressure drops to a safe level. A ramped lug extension at the base of the barrel then interacts with a tapered locking block integrated into the frame, forcing the barrel down and unlocking it from the slide. This camming action terminates the barrel's movement while the slide continues back under recoil, extracting and ejecting the spent cartridge casing. The slide's uninterrupted rearward movement and counter-recoil cycle are characteristic of the Browning system. Glock pistols incorporate a number of features intended to enhance reliability in adverse conditions, such as utilizing advanced metal coatings, "stub" slide guides instead of true frame rails, and an unusual cocking mechanism wherein the trigger is partially responsible for cocking the striker. By relying partially on force from the shooter's trigger finger to cock the striker, a Glock effectively reduces the load on the recoil spring as the slide moves forward into the battery, whereas almost all other striker-fired pistols on the market rely fully on the recoil spring to cock the striker. This design gives the recoil spring fewer tasks as the action cycles, helping to ensure that sufficient energy is available to strip a new round from the magazine and achieve full battery even when the breach, chamber, and/or magazine are heavily fouled. For these and other reasons, Glock pistols are commonly considered to be some of the most reliable striker-fired, semi-automatic handguns available, with some independent testing even showing a Glock taking a lead over a Sig Sauer P320 in a wet/dry reliability test, even though the latter was selected as the winner of the U.S. Army's MHS competition.