Colt M4 Carbine 5.56×45 NATO LE6920 FBI Model with Troy Sights and Rail


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The Colt LE6920-FBP1 is an FBI contract model. It builds on the venerable Colt LE6920 with key accessories as approved by a key Federal agency. This FBI model features an 11″ Troy Alpha free-float rail, Troy Flip-up front and rear sights, and two 30 round aluminum magazines.

The LE6920-FBP1 is not a standard M4 catalog model for Colt. These rifles were made available due to an overrun from an FBI production.

What’s in the Box

Colt M4 Carbine FBI Model
(2) 30-Round Magazines
Colt Defense Nylon Sling (Part No. 64095)
Cleaning Utensils
Plastic Muzzle Cap
Picatinny Rail Attachments
Refillable Weapons Oil Bottle (Empty)
Cable Lock
Owner’s Manual

Firearm Specifications

Manufacturer: Colt
Model: LE6920 Series FBI Model
Item Number: LE6920-FBP1
Caliber: 5.56mm NATO
Barrel Length: 16.1″
Bore: Chromed 6 Grooves 1-7″ RH Twist
Sights: Troy Flip-up Front & Rear Sights
Extended Length: 35.5″
Collapsed Length: 32.0″
Rail: 11″ Troy Alpha Free-Float Rail
Finish: Matte Black
Capacity: 30 Rounds
Action: Direct Gas System Locking Bolt