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A stripped lower is a paperweight until you have the small stuff, and the KAK Industry Complete AR-15 Lower Parts Kit rounds up every last piece so you're not hunting down a stray detent spring halfway through assembly. This is a full lower-receiver kit meant for standard AR-15 builds and repairs, and it delivers KAK-produced components throughout instead of a random mix of bin parts. Everything is machined to mil-spec dimensions, which is the part that matters most when you're fitting these pieces into a mil-spec receiver.
Open the bag and you'll find a mil-spec trigger group, KAK's own billet trigger guard, a standard A2 pistol grip, the bolt catch, magazine release, and every spring, detent, and pin needed to finish the job. The springs are finished in black oxide for corrosion resistance and smooth function, which is a nice touch on the parts that see the most cycling. It's the classic A2 setup, so if you've built a lower before, everything here will feel familiar and drop right in.
This kit handles the lower receiver side of a build, so pair it with a buffer assembly kit and an upper and you've got the makings of a complete rifle. It's just as handy for repairs and spare-parts stashes, since those tiny detents and springs have a habit of launching across the workbench and vanishing forever. Builders consistently note the parts fit clean and hold to actual military specifications, which is exactly what you want when the fit determines whether your trigger and safety behave the way they should.
KAK Industry has been turning out American-made components since 2011, and this kit reflects that no-nonsense approach. It's a straightforward, dependable foundation for a first build or a fresh set of internals in an older rifle.
Yes, this is the complete version of the kit, so it comes with a standard A2 pistol grip and KAK's own billet trigger guard. That's the difference between this kit and KAK's stripped-down versions that leave those pieces out. You get everything the lower receiver needs without shopping for extras.
It's built to mil-spec dimensions throughout, so it drops into standard AR-15 lower receivers as intended. Builders regularly point out that the fit is clean and true to military specifications, which is exactly what keeps the trigger and safety working correctly. As always, lay the parts out and confirm they match your receiver's pattern before you start.
This kit covers the lower receiver internals and controls, but it does not include the buffer assembly or stock. Pair it with a KAK buffer assembly kit and a receiver extension, and you'll have a complete lower ready to mate with an upper. From there it's just your choice of upper to have a full rifle.
It's a great choice for that. The small detents, springs, and pins in an AR are notorious for disappearing across the workbench, so keeping a complete kit on hand means you're never stuck mid-repair. Many builders grab one just for the trigger and grip and stash the rest for later.
| UPC | 811163034944 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 506-1015-007 |
| Color | Black |
| Model | |
| Product Type | Lower Parts Kit |
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