Each bolt group incorporates RCM’s F Style Carrier, Bolt Head, Extractor and 120 degree Locking Piece, We teamed up with other manufactures for the supporting parts that are made to the highest degree of quality. This Group is 100% US made and the finest out there. Complete and ready to drop in and use. Ideal for that new SD build.

Each 9mm HK MP5 SD Bolt group includes:
  • RCM Bolt Head- True F Style, Complete with RCM Extractor,Spring and Roller Set
  • RCM Locking Piece- 120 degree
  • Firing Pin- US to exact HK specs
  • Firing Pin Spring- US to HK specs
  • RCM Bolt Carrier- latest F style
  • Recoil Assembly- US made & micro polished for enhanced reliability
  • Simply the finest American Made Bolt Group Available for a fair and honest price. ANYWHERE!


Out of stock

SKU: RCM-GP-BC14 Category: