Dirty Bird 10.5″ 5.56 M-LOK AR 15 Upper Assembly (Midnight Bronze)

Description

Dirty Bird 10.5″ 5.56 M-LOK AR 15 Complete UpperrThis Dirty Bird Industries Complete Upper features a Black Nitride 10.5” Government Profile barrel chambered in 5.56 with a 1:7 twist. Built on a top-tier Forged Upper Receiver and finished with Dirty Bird’s 9.7″ SMRS M-LOK V2 or V3 Handguard available in several color options. No corners are cut when manufacturing these complete uppers. All barrels are dimpled and cold blued, use a .750 black nitride 4140 steel gas block and a carbine stainless steel gas tube. The gas block set screws feature knurled cone tops and are installed using blue loctite 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.rNEW:The Dirty Bird SMRS Handguard featured our new Rock Solid Patent Pending Anti-Slip / Anti-Lift attachment system. The clamp-on style of handguard attachment, utilized by many manufacturers is both secure and convenient but one problem has always been that clamping the handguard it tends to lift the front end of the handguard. The longer the handguard, the more drastic the effect. If you’ve ever had to bottom-out the front-sight post of a rail mounted BUIS in order to get the correct elevation, the issue is probably due to this “”lift”” phenomena.rMade in the USA –Backed by Dirty Bird Industries’ Limited Lifetime WarrantyrBarrelrrChambered in 5.56 (will also function with .223)r10.5” Government Profile w/ 1:7 TwistrCarbineGas SystemrBlack Nitride FinishrMagnetic Particle InspectedrrBCGrrMachined fromCarpenter Technology No. 158 alloy.rHeat treatedrShot peenedper ASTM B851/SAE AMS2430SrIndividually High Pressure Tested (test fired)rHP proof testing,100%using a high pressure M197 or SAAMI commercial equivalent, without evidence of failurerIndividually Magnetic Particle Inspected after Initial Test FirerManganese Phosphate FinishrrHandguardrrPatented ASAL (Anti-Slip, Anti-Lift) mounting systemrIncluded M-LOK QD Mountr“Competition Cut” top rail (V2) or continuous picatinny top rail (V3).rrUpper ReceiverrrPrecision Machined from Top Tier 7075-T6 Aluminum Forgings (forge marks may vary)rrNot all forged 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 anodizingrrrM4 Feed RampsrForge Markings may varyrMay or may not have T-MarksrrAll NFA/ATF Rules ApplyYou may use this AR 15 Upper with a lower receiver that is a Registered SBR, Machine Gun, or Pistol. Possession of this barrel along with a Non-NFA lower receiver is Prohibited, except when installed on a Pistol configuration firearm.