This Century Arms kit is an original Portuguese-made HK21 parts kit produced by FMP under license from HK. It includes all parts except the barrel, receiver and rear sight base, for builders and collectors. These are used surplus kits, so expect finish wear, scratches, dings and grease; the belt feed housing shell may be slightly deformed from disassembly.
- Brand: Century Arms
- Origin: Portugal (FMP), made under HK license
- Model: HK21
- Not included: Barrel, receiver, rear sight base
- Condition: Good used surplus
- Matching numbers not guaranteed
- Some parts, including bolts, may be original HK
