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Bro literally every single AR-15 upper on the market that is chambered in 556-223-223 wylde will shoot 223 or 556. No if ands or buts. If it is a 556 upper you can shoot 223 or 556. Let me see again if you see a AR-15 upper and it's chambered in 556, 223 or 223 wylde it will shoot 223/5.56. There's not a single upper on the market that is not compatible with one or the other
Are you new to this because it's the complete opposite of what you're saying. The .223 Wylde is a hybrid chamber designed for AR-15 rifles, allowing them to safely fire both .223 Remington and 5.56 NATO ammunition.
223 Wylde shoots both 556 and 223 rem. Its is better optimized to shoot both. 556 nato isnt as good with 223. Wylde is great with both rounds.