Hk21. Full Auto Belt Fed

HK21 Full Auto Belt Fed Machine Gun

Hk21 full auto belt fed machine gun

7.62x51 HK21E Belt-Fed Machine Gun: 100 Rounds Off-Hand Shooting

HK21 200 ROUNDS

HK 21 .308 Beltfed Machine Gun

Intense Belt Dump With HK-51 Bravo

HK21. Full auto belt fed

HK-21 machine gun

Belt-fed HK Machine Guns: MM23e and MM21e

Full auto belt fed 9mm

HK21 Full Auto

SilencerCo Chimera Full Auto Test: HK21E Belt-fed, HK53, HK G3K

Shooting the HK21 Modular Machine Gun

Forgotten Weapons

Shooting HK21 Full Auto Belt Fed Machine Gun

Heckler & Koch .308 HK21 full auto.

Ryan's Range Report

H&K's Light Machine Guns: Rare but Effective (HK21/23 & HK11)

HK21.....more testing...

American Sub Gunner

PKM 250rd long belt drag

Jerry’s Machine Guns

HK21 Machine Gun

Chick Shoots A HK-51 Bravo Beltfed