- Matte Rainbow PVD Coated Finish
- 1:5 Twist
- Pistol Length Gas System
- 5.56/.223 Chambered in 5.56×45
- M4 Feed Ramps
- Markings Spiral Engraved Near Break
- Contour Profile
- 1/2 by 28 Thread
- Custom Short Gas Tube Included
- 4150 Chromoly Steel
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