SCAR25 lower receiver (SR-25 Magazine Compatible Lower Upgrade to the SCAR-17) from Handl Defense along with the Vltor AR stock adapter (RE-SCAR: SCAR Receiver Extension / Stock Adapter) with a Troy Industries AR-15/M16 Lightweight Battle Axe CQB Stock.
This is the Sentry helmet that debuted last year along with the new Moto Mandible and Moto Visor. These are add-ons to the helmet for use in turrets or static positions. The Moto Visor opens and closes with indexing increments to allow for multiple vented positions and its designed to be used in conjunction with eye pro. As you can see, it also works with NODs.