Frontline Uppers
- Frontline 16 Complete Upper Receiver
B2-K626-AT08
- Frontline 14.5 Complete Upper Receiver
B2-K626-AT07
- Frontline QR-16 Complete Upper Receiver
B2-K626-AP08
- Frontline 7.5 Complete Upper Receiver (300 BLK)
B2-K626-CT00
- Frontline 11.5 Complete Upper Receiver
B2-K626-AT02
- Frontline 10.5 Complete Upper Receiver
B2-K626-AT01
- Frontline 12.5 Complete Upper Receiver
B2-K626-AT03
- Frontline QR-10.5 Complete Upper Receiver
B2-K626-AP06