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This kit from KAK Industry is aimed at builders who already know what trigger, grip, and trigger guard they want and just need the rest of the small stuff to finish a lower. Instead of packing in parts you're likely to swap out anyway, it sticks to the core hardware and adds one nice upgrade over a standard kit: an ambidextrous safety selector. That means you can flip the safety on and off from either side of the receiver, which is a real plus for left-handed builders or anyone who likes running controls with either hand.
Inside you'll find a bolt catch kit, a magazine catch kit, takedown pin with detent and spring, pivot pin with detent and spring, buffer retainer pin and spring, the ambi selector with its detent and spring, hammer and trigger pins, plus the hammer, trigger, and disconnect springs. It's the full set of critical lower components in one bag, so you're not chasing down individual detents and springs from three different sources to wrap up a build.
KAK has been turning out American-made AR components since 2011, and these parts hold to standard AR-15 mil-spec dimensions, so they drop into any standard lower receiver. One thing worth doing during assembly: de-grease the ambi selector screw threads and hit them with blue Loctite before install. KAK recommends torquing the selector screws to roughly 5 to 7 inch-pounds or snugging them hand-tight, which keeps everything locked in place under recoil.
If you're building a lower from scratch and want ambi controls without paying for a trigger or grip you'll just replace, this is a smart, focused way to get there. Grab your fire control group and furniture of choice, add this kit, and you've got a finished lower.
No, this is a basic kit by design and does not come with a fire control group, pistol grip, or trigger guard. It focuses on the essential lower hardware and springs so you can add your own trigger, grip, and furniture of choice. If you want a kit with those parts already included, you'll want KAK's complete lower parts kit instead.
The kit comes with an ambidextrous safety selector, meaning it has a lever on both sides of the receiver. You can engage and disengage the safety with either hand, which is handy for left-handed builders or anyone who trains switching shoulders. The standard basic kit uses a right-side-only selector by comparison.
Yes, KAK builds these to standard AR-15 mil-spec dimensions, so they drop into any standard lower. Just be sure your receiver is cut for an ambi selector, which most standard lowers are. The only fitment step to watch is installing the ambi selector screws correctly.
De-grease the selector screw threads first, then apply a small amount of blue Loctite before installing. KAK recommends torquing the screws to around 5 to 7 inch-pounds or setting them hand-tight so they stay put under recoil. This keeps the selector from backing out during use.
| UPC | 811163035828 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | AR15-LP-KT-03 |
| Model | |
| Product Type | Lower Parts Kit |
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