RTB Barreled 14.5" 5.56 Upper Receiver | 13.5" M-LOK - Black Anodized This complete upper receiver may be considered a pistol or SBR upper until a long enough muzzle device is permanently attached, providing a 16-inch Overall Length barrel.Looking for a high-quality AR upper that is both versatile and reliable? Look no further than our 14.5" upper, which can be pinned and welded to meet the 16" OAL requirement.This barrel is the perfect choice for those looking for a compact and maneuverable platform in close quarters (CQB) situations. Its shorter length makes it easier to move around corners and through tight spaces, while still providing exceptional accuracy and control.One of the key advantages of our 14.5" barrel is its improved handling and balance. With a shorter overall length and reduced weight, this barrel is easier to control and maneuver. This can make all the difference in a high-stress shooting scenario, where split-second decisions and precise movements are critical.This Barreled 14.5 inch M-LOK upper receiver comes with our RTB 13.5 inch free float handguard and is built with only the best Mil-Spec components. The heart of this upper is comprised of a 4150 barrel.Barrel: Length - 14.5" Material - 4150 Chrome Moly Vanadium Profile - Government Finish - QPQ Corrosion Resistant Gas System Length - Mid-Length Gas Block Journal - .750" Gas Block Journal Twist Rate - 1/7 Twist Muzzle - 1/2x28 Threaded Weight - 24.8oz 11-Degree Target Crown - Further improve accuracy Upper Receiver: Machined from a Mil-Spec 7075 T6 forging Hard Coat Anodized per Mil-A-8625F, Type III M4 Feed ramps Made in the U.S.A. Handguard: MATERIAL: HARD COAT ANODIZED ALUMINUM HANDGUARD, ALUMINUM BARREL NUT PRECISION BORE ACCEPTS M-LOK RAIL SECTIONS & ACCESSORIES 7075-T6 BARREL NUT RAIL LENGTH IS MEASURED ALONG THE TOP INNER DIAMETER: 1.36" ***Please allow an additional 2-3 business days of lead time as these uppers are made to order.*** All NFA/ATF Rules Apply Depending on your state and local laws, you could use this barrel with a lower receiver that is a Registered SBR, or Pistol. Possession of this barrel along with a Non-NFA lower receiver may be Prohibited. We are not lawyers and the above information is not legal advise. Make sure you understand the most up to date federal, state and local laws before proceeding with this product. SKU: RTBBU-14555613-BLK UPC: