The Colt LE6920 is a semi-automatic rifle chambered in 5.56x45mm. Similar to the battle tested M4 the LE6920 features adjustable front and rear sights. The butt stock has four-positions and the barrel is 16.1 in length and chrome lined. A picatinny rail allows for the attachment of optics. Details The Colt LE692 features a 16.1quot chrome-lined barrel with a 17quot twist an adjustable-post front sight. It has a matte black metal finish. This model has no furniture and is ready to customize with your drop-in handguard or rail system buttstock and rear buttstock and rear sight optic.