The ICR-7 is a solid assault rifle suited for medium range engagements and somewhat competitive at long range. The ICR-7 is best used behind some cover in a position where you know where enemies will come from. Maneuver the map with team support towards positions you expect enemies will come towards and where you can take advantage of the ICR-7’s strengths.
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ICR-7 Best Attachments
To help you with those medium range engagements use your favorite optics such as the reflex sight and the grip to reduce recoil. When you are attacking objectives you will need some help against submachine guns. This is where the laser sight helps you whilst firing from the hip and quickdraw helps you aim down the sights of the ICR-7 a little faster.
ICR-7 Best Gear
As you will be drawing enemies towards you it is best to use the stim shot to help you heal between fights.
ICR-7 Best Perks
Use scavenger to ensure you don’t run out of ammo with the ICR-7 and lightweight to help you get into position faster. To stay hidden whilst flanking use Ghost to stay off the enemy radar.
ICR-7 Best Class Setup
Here is the complete best class setup for the ICR-7.

ICR-7 Assault Rifle Best Class Setup Call of Duty Black Ops 4