H&K Heckler & Koch

HK 21E, 23E Recoil Rod Assembly Complete Great item to have on hand as this is a high wear and replacement item. Compatible With: HK 21E HK 23E MM23E MM21E Other custom builds or clones

H&K HK21E/23E Inner & Outer Buffer Compression Springs An unissued set of inner and outer buffer compression springs for your HK21E/23E buffer, sourced directly from HK Germany. Most...

HK German "E" Clip For Carry Handle For HK21 & HK23E folding carry handles. Clips are sold individually.

HK 21E, HK 23E Extractor Cylindrical Pin This part holds the extractor in place on the bolt head. A great spare to have on hand.

New HK21E, HK23E Factory German HK Ejector Lever Perfect for spare parts and for upgrading the MM guns and other clones with the factory HK ejector lever. Compatible With: HK 21E HK 23E HK 11E HK...

HK21E & HK23E Forward Assist Compatible With: HK 21 HK 21E HK 23E HK 11 HK 13

H&K HK21E/23E Hammer & Strut Assembly This original HK hammer and pinned strut assembly is sourced directly from Germany, providing the correct replacement or perfect upgrade for your HK21E...

New HK German 21/23E Latest Production Bipod No longer in production or available. Compatible With: Older HK21's MM23 MM11 MM13 as well as other HK21-type builds

H&K 21E/23E Left Receiver Reinforcement Rail Weldment Genuine German-made weldment for left-side receiver reinforcement rail. Precision-machined using the correct steel and milling for you HK21E...

H&K HK21E/23E Rear Sight Base Factory German HK21E/23E rear sight base ready to weld on your build. The rear sight base serves as the mounting point for the rear sight, providing stability and...

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...

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