HK11E, HK21, HK21E & HK23E

Parts here are designed for HK HK11E, HK21, HK21E & HK23E machine gun models chambered in 7.62x51mm / .308 Win or 5.56x45mm / .223 Rem unless otherwise noted. MGW offers replacement sights, catches, springs, pins and other small parts for these select-fire guns made in the 60's to present day. Outfit your Heckler & Koch HK11E/HK21/HK21E/HK23E with quality OEM and aftermarket parts and components to ensure reliable performance from every shot.

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Heckler and Koch MK21 Pawl Holder
Heckler and Koch HK21 Pawl Axle

Heckler and Koch HK21 Pawl Axle

$5.95

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Heckler and Koch HK21E / M13 Catch Bolt

Heckler and Koch HK21E / M13 Catch Bolt

$8.50

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Heckler and Koch HK21 Pawl Holder, Complete (Old Style)

Heckler and Koch HK21 Pawl Holder, Complete (Old Style)

$79.95

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Heckler and Koch HK21 Catch (Old Style)

Heckler and Koch HK21 Catch (Old Style)

$21.95

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Heckler and Koch HK21 / M13 Control Ring

Heckler and Koch HK21 / M13 Control Ring

$99.95

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Heckler and Koch HK21E / M13 Tenon
Heckler and Koch HK21 / HK21E Complete Slide

Heckler and Koch HK21 / HK21E Complete Slide

$169.95

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Heckler and Koch HK21E / HK23E Sight Aperture

Heckler and Koch HK21E / HK23E Sight Aperture

$84.95

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