- 4150 Chromoly Steel
- 5.56/.223 Chambered in 5.56×45
- 1:7 Twist
- 1/2 by 28 Thread
- M4 Contour Profile
- Markings Spiral Engraved Near Break
- .750 Gas Platform System
- Matte Rainbow PVD (Physical Vapor Deposition)
Aesthetic Coating Which Improves Durability & Lubricity
- M4 Feed Ramps
- Carbine Length Gas System
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