- Our Gun builders kit includes most of the necessary parts to build up your lower group except the commonly upgraded parts. Does not include Trigger Guard, Fire Control Group, or Pistol Grip.
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
| Manufacturer | CMMG DefCan |
|---|---|
| AR-15 Parts | Buffers/Springs |
