It’s made of 4150 Chrome Moly Vanadium Steel which is gonna last after shooting thousands and thousands of rounds. Now, one of the major factors in a gun’s accuracy is the quality of its barrel, and the Colt 6920 has an extremely high-quality barrel. My dad and myself picked up two Colt CR6920s last week. The high front post is solid and well protected. New to the AR15 world and happy to be here. The LE 6920 has a 16.1-inch chrome lined barrel with a 1 in 7 right hand twist. I personally like knowing that the materials on my gun are at least mil-spec because it gives me confidence in the overall strength of my AR 15.Īnd there’s no doubt about it, the Colt LE6920 is STRONG. Firearm Discussion and Resources from AR-15, AK-47, Handguns and more Buy, Sell, and Trade your Firearms and Gear. …to make sure that there are no weaknesses in the steel. The materials like the bolt, the bolt carrier group, the trigger, the barrel, and the springs of both guns all meet the military specifications for strength and durability.Īnd the critical parts at the heart of the rifle like the bolt and bolt carrier are high pressure tested (HPT) and Magnetic Particle Inspected (MPI)… The Colt LE6920 Magpul MOE AR-15 Rifle is Designed specifically for lightweight mobility, speed of target acquisition, and potent firepower capability The. …and, the 6920 has a 16-inch barrel to comply the US gun laws, whereas the M4 has a 14.5-inch barrel. In fact, the two guns are so closely related that the only major differences are the fact that 6920 is a semi-automatic rifle built for civilian use, whereas the M4 is a select fire weapon… So here’s the deal, the Colt LE6920 is the brother of the military’s M4, which is a time-tested and battle-proven gun.