Description
Complete SBUR04 upper receiver assembly. Full top rail with MLOK slots on 7 sides, making it easy to mount accessories exactly where needed. Includes anti-rotation tabs.
Features
- Upper receiver made from billet 7075-T6 aluminum
- Handguard is made from 6061-T6 aluminum
- Mil-Spec Type III hard coat anodize
- DLC M-16 bolt carrier group
- Radian Raptor ambidextrous charging handle
- Mid length gas system, .750″ low profile gas block
- M4 barrel extension
- 1/2″-28 thread
- ‘SHARPS BROS.’ discretely engraved on both sides
