17-556 KAK Complete AR15 Upper, 18" Barrel, 15" Mlok

UpperBarrel Length-18"Barrel Material- 416 R Stainless, Blasted Matte GreyChamber 17-556 KAKTwist Rate 1:9Muzzle Device- KAK SAW Flash Hider Extension- M4Gas System- Rifle LengthGas Block- Low profile .750 Nitride FinishUpper Receiver- Forged 7075 T6 Aluminum, Precision Machined to M16/M4 SpecHandguard- 15" Mlok, High Quality 6061 T6 Material Mlok with Proprietary Clamping System and Heavy-Duty Barrel NutBCG M16 Auto Profile Carrier Machined from Aircraft/ Bearing Quality 8620 Steel, Properly Heat Treated, Ground to Perfection, BlackNitride Finish by H&MBolt is machined from a single piece aircraft/bearing quality 9310 steel, heat treated properly, precision ground, Shot Peened and MPI'dFiring pin is machined to the mil-spec print from 8740, precision ground, and chrome platedOne Piece Billet Fully Machined Enhanced Extractor, Phosphate coated for Increased reliability and corrosion resistanceNitride Cam PinS7 tool steel ejector and extractor retaining pin4130 Gas Key, nitride, precision staked using our hydraulic staking machineKAK Carrier Key Screws- T25 drive, Grade 8, Properly Heat TreatedAll KAK complete upper receivers are test fired for feed and function using commercially loaded ammunitionNOTICE- 17-556 Was created by KAK Industry and is our proprietary chamber design. This chambering is NOT cross compatible with similar cartridges, do not attempt using other rounds in the 17-556 chamber.Cases we are being asked about regarding cross compatibility are too long, if you manage to jam the neck into the throat the headspace is almost .100 short so you're risking a catastrophic failure, don't shoot ammo in guns it's not chambered for.This chamber is NOT compatible with 17 RemingtonDOWNLOAD 17-556 RELOADING DATA