You can now pre-order a wearable Mass Effect N7 Sentry Interface, a helmet customization option from Mass Effect 2 and Mass Effect 3. Check it out here.
The visor includes a pretty cool blue LED-lit visor and carbon fiber headpiece that wraps around Shepard's head. It was part of the Sentry Interface DLC in Mass Effect 2 and was also available in Mass Effect 3.
As far as helmets go, the N7 Sentry is one of the coolest, as it gives you a chance to keep a helmet on Shepard without covering their
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