The HK MR762 A4 is the commercial version of the HK417, chambered in 7.62x51mm. It has a short-stroke gas piston and fully ambidextrous controls.
The MR762 is Heckler & Koch's commercial version of the HK417, a 7.62mm rifle with a long service history. The A4 series is HK's latest update to the commercial versions of the HK416 and HK417. The A4 adds fully ambidextrous controls, lighter weight and a slimmer profile, along with an adjustable gas regulator so you can tune the rifle for suppressed or unsuppressed shooting.
This is the 16.5-inch rifle. It's chambered in 7.62x51mm and runs on HK's short-stroke gas piston system. That system keeps hot carbon fouling out of the action, which helps the rifle run cleaner and cooler than a direct impingement design. The barrel has four lands and grooves with a 1-in-11-inch right-hand twist.
The adjustable gas regulator matters if you shoot suppressed. A suppressor raises back pressure, and being able to turn the gas down helps keep the rifle from cycling too hard. It's a feature you'll appreciate on a battle rifle.
The stock adjusts, so the overall length runs from 35.5 to 39.5 inches. The rifle weighs 8.8 pounds without a magazine, which is fairly light for a 7.62mm piston rifle. HK includes a 20-round magazine, or a 10-round magazine for restricted states.
HK's reputation comes from military and law enforcement use around the world, and the MR762 brings that engineering to civilian shooters. The A4 updates make it easier to live with day to day.
If you want a 7.62mm rifle with genuine HK lineage and modern ambidextrous controls, the MR762 A4 is a serious, well-built choice.
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