Chambered for 5.56x45 NATO, originally derived from .223 Remington, 5.56 NATO is the standardized and most popular cartridge developed for the AR-15 platform. Utilizing a .22 Caliber projectile, the low mass, high-velocity cartridge allows superior weapon handling with manageable recoil and high accuracy. With a wide variety of ammunition choices on the market, 5.56 NATO chambered AR-15s are 'multi-caliber' and can reliably fire both 5.56x45 NATO and .223 Remington cartridges.
This 4150 CMV barrel has a 1:8 twist rate which provides an advantage to shooters who are looking for a more universal barrel. It's crafted from 4150 CMV which is Mil-Spec gun steel that does a great job handling heat which helps it maintain its accuracy. The nitride finish increases the barrel's durability and makes it less susceptible to corrosion. This barrel has a carbine gas system and is dimpled to allow for easy and secure gas block installation and alignment.
The KAK 1/2-28 9mm compatible Mini Compensator is made with high-quality material and a tough, durable finish. It is half an inch shorter than KAK Industry standard compensators and has a closed end with holes in the upward position. This compensator makes a great addition to your 9mm build.
This Build Features The "Vertex" Pistol AR-15 Caliber Billet Upper Receiver. The Vertex Upper Is Machined Out Of A Single Block Of 7075 T6 Billet Aluminum In Order To Create Its Intricate Lines And Angles And Finished With A Hard Coat of Black Anodization. The Vertex Upper Was Designed To Be Used With Pistol Calibers Specifically And As A Result Doesn't Have A Dust Door Or Forward Assist. This Was Done To Save Weight As Well as Improve Functionality And Reliability By Focusing On A Simple Design That Has Fewer Moving Parts And Therefore Fewer Parts That Can Break, All The While Not Compromising On Strength And Durability. This Upper Will Fit On A Traditional Mil-spec Lower Receiver Or A Pistol Caliber Specific Lower Receiver.
The Unique-ARs Freedom free-float Handguard says it all. Go America! This Unique AR's AR-15 Free-float handguard is made of 6061 T6 Aluminum. The Inside diameter is 1.75", exterior diameter 2". Compatible with any mil-spec upper.