Question: call of duty modern warfare how to use xrk weapons pack?
Answer: To equip the weapons you need to reach level 4 so you have access to Loadouts. Once you've done this you can equip the XRK weapons into your Loadout by entering Loadout and going to Primary Weapon Select and the M4A1 (right over to Armory then equip XRK M4) and Secondary Weapon Select the .