HK 21A1 feed mech, bolt group, recoil spring assembly, and barrel. All German HK.

JoshNC · July 17

Up for sale is a complete all German HK 21A1 conversion kit. This includes a 21A1 feed mech (single stroke belt advancement on bolt group forward travel), the correct 21a1 carrier for this feed mech, a DM1 German 21E bolthead, the correct 21a1 recoil spring/guide rod assembly with 46 coil spring, and a German 17.7” barrel. The recoil spring assembly is new. All other parts are in used but excellent condition. The bolthead has -2 rollers in place.

These 21a1 kits are more rare than 21E kits. The 21a1 parts are compatible with 11a1/21a1 and 21e/23e receivers. The 21A1 is a product improvement over the original 21, using a swing down feed mech and upgraded extractor. It is a transitional design that eventually became the 21E.

This kit took me quite some time to complete. This is perfect to combine with an 11a1 parts kit and is plug-and-play. This kit will also work on a 21e/23e receiver.

The price is $38,000 shipped/insured CONUS. Payment will be by certified check or wire transfer. The only trade I would be interested in is straight up for a transferable Colt M16A1. I am open to reasonable offers, but, please no low ball offers.

I will not ship to any states where these parts are restricted.

If interested, PM me. DO NOT REPLY IN THIS THREAD. Due to the scammers who come up with new ways to defraud people, I will have a phone call with any prospective buyer. I am happy to FaceTime too. English is my first language, I don’t speak with an accent, I don’t use odd grammar (eg grammar from someone for whom English is a second language), I won’t make strange excuses for why I cannot have a phone/Facetime call, and I’m not on some oddball time zone.

Edited July 17 by JoshNC