HK417
Like the HK 416, the HK417 was developed for special forces units. Information about this weapon emerged in 2005 from the new interest in 7.62 mm caliber rifles, arising from the experience of international forces in the Afghanistan War and the Iraq War where greater range and power of penetration was very useful. It shares operating, control, disassembly and maintenance characteristics similar to the American AR-15, M16 and M4 series of rifles. It uses the gas-operated piston system developed by HK on its G36 and HK 416 rifles, improving reliability, cleaning and maintenance as no propellant or charcoal residues are being redirected to the chamber. The cylinder head has a retractable multi-position, with battery compartment, with two shooting modes (semi-automatic and automatic), with a 1-turn 11 "spline, with adapter for flames, recoil compensator and / or muffler. optical rail, laser pointers and adapter for 40mm grenade launcher.
The HK 417 has a gas-operated recharging system for a short-throw piston and rotary bolt (similar to the HK G36). The guns are made of cold forged steel. There are three different barrel lengths for the HK417: 305 mm (12 inches), 406 mm (16 inches, standard or heavy version) and 508 mm (20 inches, heavy). Assembling a precision barrel, the MDA 1 precision weapon is provided, using the appropriate ammunition. Cannons can be replaced quickly using simple tools. The HK 417 retains all of the M16's style controls, including the device to hold the bolt open after firing the last cartridge, the rotary bolt, the loading handle at the base of the rear of the mechanism drawer and the button of the magazine catch on the right side. Has ambidextrous fire selector with safe, semi-automatic and automatic mode.
The HK 417 comes with four Picatinny rails integrated into the handrails and accepts any type of viewfinder type STANAG-1913 compatible with these supports. You can also accept, by modifying it, the HK AG36 / AG-C 40mm grenade launcher, which attaches directly to the bottom of the rail. The cylinder head is similar to that of the M4 carbine, with six position retractable system. The first prototypes used the HK G3 chargers, and were later replaced by 10 or 20 magazine cartridges made of translucent polymer, similar to the G36. There is a 50 cartridge drum charger initially designed for the HK21E that can be used to provide fire support.
The first prototype HK417 used magazines of 20 rounds of the Heckler & Koch G3 family of rifles, which did not have a bolt retention device. Subsequent prototypes, however, were changed to a polymer journal with retaining bolt. The magazine resembles an expanded version of the G36's transparent magazine, except it does not have the pins to hold more than one magazine together. HK417 buyers have generally intended to supplement the lighter-chambered assault rifles for less powerful intermediate cartridges (often 5.56 × 45 mm NATO), for the designated sniper role. The greater precision, effective range and penetration of the HK417 compensate for its greater expense, lower firing rate and lower ammunition capacity, both in the magazine and in transportation.`
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