GLOCK 17 Gen4The Modular Back Strap design of the GLOCK 17 Gen4 allows one to easily customize its grip to add comfort, regardless of the shooter's hand size. The surface of the frame features the new Gen4 rough textured profile. Internally, the new GLOCK dual recoil spring assembly substantially reduces the wear and tear on the system. A reversible enlarged magazine catch, changeable at user level accommodates left and right-handed operators.
Only a year after the launch of the first generation of their P30 series, HK introduced an upgraded variant. This new model is called P30L and so far has been released in 9mm Parabellum and .40 S&W calibers only. All other features that apply to the first generation of P30 pistols also hold true for this one.
The main differences between the two generations are:
The overall length increased by 29 mm (1.14 in), which was achieved by increasing the pistol's height from 131 mm (5.16 in) to 151 mm (5.94in) and adding some 17 mm (0.67 in) to its width; Magazine capacity increased from 10 to 15 rounds for the 9mm version and from 12 to 16 rounds for the .40 S&W variant. Locking slots are added to the pistol's slide, which can be used with a "third hand" device. An ambidextrous external safety/decocker that can be mounted on both sides of the firearm. The front sight is now interchangeable – it is possible to install a different type of blade or an adjustable one. Spent cases eject slightly to the right (in conventional semi-autos) as opposed to directly down as before.
The most significant internal change was switching from simple holes drilled through the barrel, called venting, which acted somewhat like mini-ch and resulted in muzzle flip after firing, to a more effective and controllable "ported" barrel. Ports are drilled at an angle into the barrel's top section and allow escaping gas to press on the slide from the front as well as counteract muzzle flip by directing the gases to the side of that section. This results in a much greater reduction of felt recoil than with a non-ported barrel. The P30L proved to be a very soft shooter even when compared to other ported pistols such as, for example, HK USP Match or Beretta 92 Combat Competition.
The pistol is available either with conventional fixed sights or with a proprietary HK rear sight called Night Sight – similar in appearance and function to those made by Trijicon – which has two self-luminous dots. The latter is powered by a tiny lamp (powered either by phosphorous or tritium) installed in the rear sight's body and do not require batteries, allowing them to operate for several years without requiring any outside source of energy.
