MW3 Heckler & Koch HK21 - Modern Warfare 3

Heckler & Koch HK21

The Heckler & Koch HK21 appears in-game as the “RAPP H”. It has a stylized handguard and barrel, and incorrectly has the aforementioned PTR 9KT-style trigger group (this time with normal S-E-F markings), though it can be fitted with a more appropriate Navy-style trigger group with the “LMK64 Grip” attachment.

In the campaign, it’s correctly used by the Mexican Army.

Heckler & Koch HK21 – 7.62x51mm NATO

The HK21’s left side in the gunsmith screen screen.

Right side.

Holding the HK21.

ADS’ing with the HK21. No, the sights are not misaligned, it’s just the incredibly high sway many weapons in MWII have.

Inspecting the belt box and feed system.

Reloading starts with locking the bolt back, opening the feed tray and removing the belt box.

Inserting a new belt.

Giving the charging handle a big slap.

Reloading with Fast Hands skips the opening of the feed tray and the operator just opts to pass the guiding tab of the belt through the receiver…

…and sadly doesn’t slap the charging handle with much energy anymore.

Vollmer HK51-B

An Vollmer HK51-B can built with the short “10.6” Lachstrike Barrel.”

Vollmer HK51-B without ammunition belt – 7.62x51mm NATO

The shorty HK51 with the 100-round belt box and standard style stock.

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