When it comes time to upgrade your current set up take a good long look at Leapers UTG. Leapers UTG gear is well made using high quality components and utilize modern design and manufacturing process to ensure shooters have the very best gear for duty"" defense"" competition"" recreational"" and all other shooting venues. This is the Pro Model 4/15 carbine length"" super slim drop in handguard that fits AR rifles and it includes a removable two 2-Slot and two 4-Slot rail sections for 3"" 6 and 9 O'clock positions.