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