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The KAK Industry KF-15 takes the guesswork out of starting an AR-15 build. It arrives as a complete lower, meaning the fire control group, buffer tube, buffer, grip, and stock are already installed and ready to mate with your upper. Machined from USA-produced 7075-T6 forged aluminum and wrapped in a Type III Class II hard-coat anodized finish, it brings the kind of strength and corrosion resistance you'd want holding your rifle together for the long haul.
KAK didn't cut corners on the details. The receiver features an M4-style fire control pocket that accepts all mil-spec lower components, pictogram selector markings on both sides for quick reference, and threading for an upper receiver tensioning screw. That tensioning screw is a nice touch that lets you dial out any play between the upper and lower for a tighter, rattle-free fit. Builders who have run these routinely mention how clean the fit and finish come out of the box.
This version ships with the traditional A2 fixed rifle stock and matching A2 grip. The A2 stock gives you a fixed length of pull and a solid cheek weld, which a lot of people prefer for a rifle-length build, range work, or just that classic full-size AR feel. It houses a rifle-length buffer tube and buffer, so the internals match the stock rather than being an afterthought.
Since the caliber is listed as Multi, this lower works as the base for a wide range of AR-15 chamberings. Pair it with the upper of your choice and you've got a functioning rifle without sorting through a pile of small parts. It's a straightforward, serviceable foundation whether this is your first build or your fifth, and the value you get for a complete assembly makes it an easy one to reach for.
Yes. It comes with the lower parts kit, fire control group, buffer tube, buffer, A2 stock, and A2 grip already installed. All you need to finish a working rifle is a compatible upper receiver and a magazine.
Since it accepts all mil-spec sized lower receiver components and uses a standard M4/M16-style fire control pocket, it pairs with any mil-spec AR-15 upper. Builders regularly report clean fitment with uppers from KAK as well as other major brands, and the tensioning screw threads let you snug things up for a tighter fit.
The A2 is a fixed-length rifle stock, so the length of pull does not adjust. It gives you a rock-solid cheek weld and that traditional full-size AR feel, and it runs a rifle-length buffer system. If you want a collapsible option instead, KAK offers the KF-15 in M4 stock configurations.
The lower is marked Multi, which means it is not tied to a single caliber. The chambering is determined by whichever upper you install, so it works as a base for a wide range of AR-15 cartridges.
| UPC | 811163036818 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 801-0604-005 |
| Action | |
| Caliber/Gauge | Multi |
| Color | Black |
| Model | |
| Product Type | Complete Lower Receiver |
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