![17-5.56 KAK Complete AR15 Upper, 21" Barrel, 15" Mlok 17-5.56 KAK Complete AR15 Upper, 21" Barrel, 15" Mlok](https://cdn11.bigcommerce.com/s-pompwzlgb8/images/stencil/300x300/products/2681/5729/Variants_-_2024-05-01T153515.140__00394.1714595735.png?c=1)
Custom KAK camo Complete Rifle- 17-556, 21" Fluted Barrel, 15" MLOK, K-SPEC Down Vent BCG
Limited availability, first come first serve, Custom flektarn camo cerekote
Lower includes Magpul MOE FDE stock, K2 grip, and 20 rd Lancer mag, K-SPEC down vent enhanced BCG- PVD FDE comes standard, if you wish to switch to a different BCG, place your order and include which BCG you would like in the order comments, we will adjust your total +/-$.
Picture of 3x shot group is from the very first 3 shots of our company rifle
Upper
- Barrel Length-21”
- Barrel Material- 416 R Stainless, Blasted Matte Grey, 9- Flute
- Chamber 17-556 KAK
- Twist Rate 1:9
- Muzzle Device- KAK SAW Flash Hider
- Extension- M4
- Gas System- Rifle 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
BCG
- 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, nitride, precision staked using our hydraulic staking machine
- KAK Carrier Key Screws- T25 drive, Grade 8, Properly Heat Treated
All KAK complete upper receivers are test fired for feed and function using commercially loaded ammunition
NOTICE- 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.
We wanted to use brass that was plentiful and inexpensive, like lake city 5.56 military brass. We developed sub .5" loads or better with powder ranging from 4198- Ramshot Tac in correlation to the burn range data. Base loads can be worked up from 17-223 and 17 Remington load data for a base load. While using 20 gr bullets, and even faster with 15.5 gr. Velocities from 4200-4600 (18" version, TBD 21" version) fps depending on charge and bullet weight is what we found to be optimal with this barrel.
We are producing KAK Industry 17-556 Custom chambered barrels for this cartridge currently.
Our Custom Chamber Reamers offer improvements such as reliable extraction, no neck turning needed, and the correct amount free bore in correlation to these light varmint bullets liking a jump to be accurate.
The barrels have optimized tweaks to aid in reliable extraction.
We worked with Redding to produce dies that match our chambers perfectly.
NOTICE- 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.
This chamber is NOT compatible with 17 Remington
DOWNLOAD 17-556 RELOADING DATA
- Caliber:
- 17-556
- FFL:
- Yes
Reviews
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Awesome caliber
It is an awesome setup. I would get another one if I would have a use for it. I plan on taking it fox hunting in pa this year and I can't wait. It also groups very well. Thanks for the caliber and all the hard work for this caliber to be here kak.
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.17-5.56 Complete 21" Camo Rifle
What can I say but, perfection! This rifle checks literally every box I need it to. I predator hunt in PA using thermal optics and I wanted a flat shooting laser beam with speed, energy and this delivers both. I loaded some 20gr Vmax to shake the rifle down and WOW, .25" to sub MOA groupings at 50 and 100 through a thermal optic and a dead air .30 cal silencer. The only issue I have with the rifle is that I'm going to have to wait for fur season to open to really use it. The camo pattern is incredible and the np3 bcg is great. Overall the build far exceeds my expectations. Only thing I may change is put one of my giessele triggers in it. I may also buy a spare barrel just to have. The jury is out as to how long the barrel will last but I love this gun enough to have a spare. Thanks to KAK for building such a great rifle.