Sigwo Arms Lower Gunbuilders Kit
All the parts you need to get started on your next AR15 build in convenient color-coded packets to simplify assembly. Combine this kit with a Buttstock or Brace kit to complete your lower group.
Kit Includes:
- Bolt catch/roll pin
- Bolt catch plunger/spring
- Trigger/hammer retaining pins
- Safety, detent, & spring
- Magazine catch, spring, & release button
- Pivot/takedown pins, detents, & springs
- Buffer retainer/spring