These take the Defender series and add:
- Chrome lined and phosphate coated barrel
- NP3 coated bolt with Carpenter 158 (5.56/300 Blackout)
- Dual Ejector Bolt
- Quad-Picatinny Rail
- Optional Polymer flip-up sights during combat to be used in conjunction with optics and electronics
- H1/H2/H3 buffer weight as necessary. Most configurations move to H2.