HK21 / HK23 / HK11 Series

HK21 NOS Bolt Head - FMP Genuine new old stock FMP contract date-coded bolt head for the HK21 platform. Perfect for a replacement or spare, as these bolt heads are no longer in production. Compatible with: HK21 (Early and FMP, NOT compatible with HK21E)

HK21 Barrel Handle with Insert -7.62x51, .308, 5.56, .223 - USED USED PARTS ARE SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL USED PART SALES ARE FINAL. Factory German upgrade for HK21 barrel handles Compatible With: HK21 THIS CLOSEOUT PART IS...

HK21E Cylinder Head Screw - Belt Feed Mechanism - RARE  Replacement cylinder head screw for the HK21E belt feed mechanism, manufactured to original specifications. Ensures proper fit, secure retention, and reliable feeding operation.  A rare,...

HK 21E, 23E Rear Sight Elevation Drum Factory HK elevation drum for 21E, 23E, and 13E rear sights.  This part is new old stock and no longer in production. Limited quantity available. Compatible With: HK 21E HK 23E HK 13E

HK 21E, 23E Rear Sight Windage Drum Factory HK rear sight windage drum.  New old stock and out of production.  Only a few units available. Compatible With: HK 21E HK 23E HK 13E

MM HK21E, HK11A1, HK11E Barrel - 17.7" Michael's Machines HK21E barrels are crafted in the US from 41V50 CHF blanks and fully nitrided for optimal corrosion resistance. Barrels come stripped, requiring a flash hider or muzzle device and barrel handle...

H&K 91/G3/MSG90 5 Round Magazine Spring This factory HK spring is designed for the 5-round HK91, G3, and MSG90 magazines. Built for durability and reliable feeding, it's an essential replacement part to keep your magazine in top condition. Compatible...

Heckler and Koch Barrel Shroud Sling Mount for your HK21 Features: German-made spring steel sling clip Designed for the HK21 and HK21-A1 barrel shroud Correct HK production part for a secure sling attachment Compatible With: HK21, HK21-A1 HK21E,...

H&K 21 3 Position Trigger Housing - RARE This rare 3 position trigger housing features Mexico markings and is designed specifically for the HK21. It is a unique find, never before offered, and has never been available with this...

US Made HK21 Trunnion By Michael's Machine (MM) These are the finest US-made trunnions available.

HK23E Factory German Extractor Spring Rare and hard to find. This is a new HK German part.

New HK German Assault Grip This vertical grip mounts directly to the front shroud and can be mounted at several angles depending on the shooter's option. This item is no longer available or in production. Compatible With: HK 21e HK 23e HK 11 HK...