
KAK Industry has introduced their latest for the AR pattern with their new 17-556 21 inch upper receiver.
KAK Industry states “KAK Industry is thrilled to present a new 17-5.56 product, featuring our proprietary 17-5.56 chamber and an 21” 416 R Stainless barrel for unparalleled precision. With a 15” M-LOK handguard and Enhanced your choice of BCG, this upper delivers reliable extraction and blazing fast velocities.”
KEY SPECIFICATIONS:
- Barrel Length-21”
- Barrel Material- 416 R Stainless, Blasted Matte Grey
- Chamber 17-556 KAK
- Twist Rate 1:9
- Muzzle Device- KAK SAW Flash Hider
- Extension- M4
- Gas System- Magnum Length
- Gas Block- Low profile .750 phosphate Finish
- Upper Receiver- Forged 7075 T6 Aluminum, Precision Machined to M16/M4 Spec
- Handguard- 15” Mlok, High Quality 6061 T6 Material Mlok with Proprietary Clamping System and Heavy-Duty Barrel Nut
- M16 Auto Profile Carrier Machined from Aircraft/ Bearing Quality 8620 Steel, Properly Heat Treated, Ground to Perfection
- Bolt is machined from a single piece aircraft/bearing quality 9310 steel, heat treated properly, precision ground, Shot Peened and MPI’d
- Firing pin is machined to the mil-spec print from 8740, precision ground, and chrome plated
- One Piece Billet Fully Machined Enhanced Extractor, Phosphate coated for Increased reliability and corrosion resistance
- S7 tool steel ejector and extractor retaining pin
- 4130 Gas Key, precision staked using our hydraulic staking machine
- KAK Carrier Key Screws- T25 drive, Grade 8, Properly Heat Treated
To learn more about KAK Industry. CLICK HERE
