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:
- 16″ Government Profile, 1/8 Twist 223 Wylde Nitride Barrel
- Mil-Spec M16 5.56 Bolt Carrier Group, Nitride
- 12″ MLOK Handguard With Lightweight Interrupted Top Rail
- Mil-Spec Charging Handle
- A2 Flash Hider
- Test Fired
- Made in USA
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