- Colts Newest and most advanced AR-15, roll mark designated as: AR-15A4 Lightweight LE Carbine
Lightweight magnetic particle tested barrel- 1:7 rifling twist
- Magnetic particle tested bolt head
- Flip-up rear sight by MaTech, adjustable for both windage and elevation
- Double insulated hand guard
- Top picatinny rail with number designations
- 4 position buffer tube and M4 stock
- Bayonet lug and flash hider
- Direct gas impingement operating system
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