I agree with Brenden about the gas port issue. Best bet is to gt a 22lr conversion.
Brownells sells one that replaces your current bolt with a fully enclosed blowback bolt. Literally all you do is open the gun, pull your 556 bolt & drop in this one. Usually around $200 with 2 or 3 magazines. They run stupid good & are a ton of fun.
And who knows, they may not be available soon
Vance in AK.
"But seek first the kingdom of God and His righteousness, and all these things shall be added to you."