Dirty Bird 13.7" Government Midlength 5.56 NATO M-LOK V3 Upper Assembly

This Dirty Bird Industries Complete Upper features a Dirty Bird Midlength Sub-MOA 416R Medium Profile barrel chambered in 5.56 with a 1:8 twist. Built on a top-tier Forged Upper Receiver, no corners are cut when manufacturing these complete uppers. All barrels are dimpled and cold blued, use a black nitride 4140 steel gas block and a stainless steel gas tube. The gas block set screws feature knurled cone tops and are installed using blue locktite ensuring that no amount of firing will cause the set screws to come loose but they will still able to be removed for servicing if needed. This build will include one of Dirty Bird's enhanced BCGs, which are individually High Pressure Tested and Magnetic Particle Inspected to ensure flawless operation in any AR-15 platform rifle or pistol. Made in the USA - Backed by Dirty Bird Industries' Limited Lifetime Warranty Barrel Chambered in 5.56 (will also function with .223) 13.7" Medium Profile w/ 1:8 Twist Midlength Gas System Black Nitride Finish Magnetic Particle Inspected 416R Stainless Steel Sub-MOA Guarantee Bolt Carrier Group Designed for use with both 5.56 and .223 Strategically relocated load bearing surfaces reduce carrier tilt/can't during recoil, thus increasing reliability and longevity Additional wall thickness in the gas exhaust port area for added strength and rigidity High Pressure Tested and Magnetic Particle Inspected Upper Receiver Precision Machined from Top Tier 7075-T6 Aluminum Forgings (forge marks may vary) Not all foged uppers are created equal and we only use the best for our uppers meaning they will be free from excessive pitting, machined to spec and finished with quality (not purple or chalky) hard coat anodizing M4 Feedramps Forge Markings may vary May or may not have T-Marks Handguard Patented ASAL (Anti-Slip, Anti-Lift) mounting system Included M-LOK QD Mount "Competition Cut" top rail (V2) or continuous picatinny top rail (V3). Charging Handle Mil-Spec Style 6061-T6 Billet Aluminum Smooth Operation and Positive Grip under Extreme Conditions Type 3 Class 2 Hard Coat Anodizing