- 16″ Government Profile, 1/8 Twist 223 Wylde Nitride Barrel
- Mil-Spec M16 5.56 Bolt Carrier Group, Nitride
- 15″ MLOK Handguard With Lightweight Interrupted Top Rail
- Mil-Spec Charging Handle
- A2 Flash Hider
- Test Fired
- Made in USA
ZRO Delta’s complete upper receiver assemblies include everything you need to complete your lower receiver build. Simply slap on your lower and head out to the range! Features a 16 inch free-float barrel chambered in .223 Wylde with a 1/8 twist and has a 15 inch M-LOK handguard.
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