- HK416 elongated steel castle nut
- HK416 A5 upper receiver
- Continuous picatinny rail interface between upper receiver and handguard
- M-LOK interface with integral ambi QD cups
- Suppressor-ready concentric 1/2X28 threads
- Match rifle cold-hammer-forged barrel
- Ambidextrous safety lever, bolt release and magazine release
- Ambi safety selector with 45-degree throw
- Updated angled magazine well for reliable feeding
- HK416 2-position adjustable gas block
- Single point QD end plate