Heckler & Koch MR762 A4
Heckler & Koch · Rifle · In Production · 2025
Also known as: MR762A4
Overview
The Heckler & Koch MR762 A4 is the 7.62x51mm NATO member of HK's MR A4 rifle family, the semi-automatic civilian derivative of the HK417. It shares the series' short-stroke gas piston with an adjustable regulator, cold-hammer-forged 16.5-inch barrel, fully ambidextrous controls and M-LOK handguard, in a slimmer, lighter package than the earlier MR762.
Specifications
| Weight (empty) | 4200 g (148.2 oz) |
| Overall Length | 940 mm (37.01") |
| Barrel Length | 419 mm (16.50") |
| Action Type | Gas Operated Short Stroke |
| Firing Mechanism | Rotating Bolt |
| Trigger Type | Single Stage |
| Trigger Pull | 22 N (4.9 lbf) |
| Magazine Capacity | 20 rounds |
| Magazine Type | Detachable Box |
| Muzzle Velocity | 800 m/s (2625 fps) |
| Effective Range | 700 m (766 yd) |
| Barrel Rifling | Right Hand |
| Rifling Twist | 279 mm (10.98") |
| Frame Material | Aluminum |
| Barrel Material | Steel |
| Stock Material | Polymer |
| Finish | Black |
Calibers
- 7.62x51mm NATO · primary · 7.62x51mm NATO — also known as .308 Winchester, 7.62 NATO
Features
- Firing modes: Semi Automatic
- Feed systems: Detachable Box Magazine
- Safety mechanisms: Ambidextrous Safety Selector
- Features: Short Stroke Gas Piston, Adjustable Gas Regulator, Cold Hammer Forged Barrel, Ambidextrous Controls, M Lok Handguard, Collapsible Stock, Lifetime Barrel Warranty
Production
Production years: 2025-present
Origin
Country of origin: Germany
Notes
Introduced with the MR556 A4 in the 2025 model year and carrying HK's lifetime barrel bore guarantee. Added to close a catalogue gap - not a 2026 release. Weight and overall length are approximate.
Background
HK's AR-10-pattern rifles trace to the HK417, built for troops who wanted 7.62 reach back after Afghanistan's long valleys exposed the limits of 5.56.