We have AR build kits in 5.56, just add a stripped lower!

Kit includes:
Stripped upper
Fwd assist assembly
Ejection door/rod
Barrel and muzzle brake
Handguard and barrel nut
Gas block, tube
BCG, charging handle
lower parts kit
4.5 inch 9mm in stock
350 Legend in stock

.....just add your stripped lower of choice.
Anderson stripped lowers are $55 out the door.
Aero Precision stripped lowers are $120 + tax