HKP Blog
HK 91/G3 Overview
Learn about this iconic rifle:
The Heckler & Koch G3 is a rugged 7.62×51mm NATO battle-rifle built on a proven roller-delayed blowback system — a workhorse adopted worldwide, known for simple, reliable mechanics, modularity, and legendary military pedigree.
The HK91 variant is the semi-automatic version that has been converted from the G3 platform.
Specs:
Caliber: 7.62×51mm NATO (standard).
Operating system: Roller-delayed blowback.
Standard barrel lengths: ~16.5–20&
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5th Nov 2025