Heckler & Koch HK416


The Heckler and Koch HK416  is a select-fire rifle chambered in 5.56 NATO. Founded in 1949, HK is a German defense manufacturing company that designs and produces small arms. The HK416 was released around 2005 as a more functionally reliable replacement for the ubiquitous M4 and M16.

The HK416 uses a proprietary gas-piston operating system where gas released from the firing of an individual round cycles through a tub that pushes against a piston and then the piston drives the bolt rearward. The bolt ejects the spent casing and reloads a fresh cartridge. This system tends to require less maintenance because the gas doesn’t expel inside the chamber.

Features include a cold hammer forged, meaning a machine carefully carved grooves in the bore. It is known for increased accuracy and durability. The HK416 also uses corrosion resistant magazine. It has a retractable stock, pistol grip, and folding front sight. It also has a Picatinny rails for easy mounting of optics and accessories.

The HK416 is available in four barrel lengths: 10.4″, 14.5″, 16.5″ or 19.9″.



Caliber: 5.56 NATO
Capacity: 20<br />30
Sights: Open
Features: Available as complete carbine or rifle or as a "drop-in' HK416 upper receiver module for use on the lower receivers of existing M4/M16 types weapons<br />Picatinny rails
Action: Full-auto<br />Semi-Auto
Stock: Polymer/black
Material/Finish: Polymer/black
Scope: Picatinny rail
Website: http://www.hk-usa.co…
Weight: 7.21 pounds<br />8.24 pounds<br />8.4 pounds<br />9.05 pounds
Barrel Length: 10.39"<br />14.49"<br />16.5"<br />19.88"
Length of Pull: Adjustable"
Overall Length: 27 to 31.38"<br />31.65 to 35.43"<br />33.66 to 37.44"<br />37.05 to 40.83"
Caliber: 5.56 NATO
Capacity: 10<br />20<br />30
Sights: Open
Features: Gas piston operating system; HK free floating rail system (FFRS) handguard; fully ambidextrous controls and cold hammer-forged German-made barrel
Action: Full-auto<br />Semi-auto
Stock: Adjustable
Material/Finish: Steel/blued
Scope: Four Picatinny rails
Website: http://www.hk-usa.co…
Weight: 6.81 (loaded) pounds
Barrel Length: 9"

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