- Colt's Proprietary Free Float Rail & Upper Receiver System
- Redesigned Lower with Fully Ambidextrous Controls
- Folding low profile adjustable sights
- 16.1 4150 CMV Barrel
- Folding low profile
- adjustable sights
The Colt M5 Carbine features a completely redesigned lower receiver and upper receiver with full ambidextrous controls and an enhanced upper receiver rail design which ensures extreme rigidity.