The REQ CARD for 2 bayonet ARs seem to be wrong. The card for the Recon Bayonet AR is labelled as “Common”, but is in reality rare. The card for the Longshot Bayonet AR is labelled Uncommon but is actually Ultra Rare.
When viewing your REQ collection on Waypoint, go to loadout and filter by rarity. When the filter is set to ‘Rare’, right at the top of the page you see the Recon Bayonet AR labelled as common. When the filter is at Ultra Rare, you will see the Longshot Bayonet AR card labelled as Uncommon.
On a side note, even though standard Bayonet AR is a common REQ (says so on the card and shows up in the ‘common’ filter), it is impossible to get via Bronze packs.