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Kak Industry
The Kak AR-15 Lower Parts Kit Complete gives you everything you need to finish a lower receiver build in one box. This complete lower parts kit includes a mil-spec fire control group, bolt catch, magazine release, A2 pistol grip, billet trigger guard, and all the springs, detents, and pins required for assembly. It's 100% American made, which matters if you care where your components come from. Pair it with a buffer assembly kit and a lower receiver, and you've got a functional lower ready to go—no hunting through hardware bins or waiting on backorders for obscure fasteners.
KAK Industry builds these kits to mil-spec dimensions, so compatibility with standard AR-15 platforms is straightforward. Whether you're assembling your first AR or your fifth, having a complete lower parts kit eliminates guesswork and missing-part frustration. The included A2 grip and trigger guard get you started, but if you prefer a different grip angle, safety lever type, or trigger guard profile, you know going in what's included and what you can swap out.
Lower parts kits are one of those consumable categories where cheap often means headaches later. KAK's reputation in the AR platform is solid, and an American-made kit tends to hold tighter tolerances than imported alternatives—something you'll notice during assembly and throughout the life of the rifle.
| Brand | Kak Industry |
| Compatibility | AR-15 lower receiver |
| Grip Included | A2 pistol grip |
| Trigger Guard | Mil-spec billet trigger guard |
| Fire Control Group | Included |
| Manufacturing | 100% American made |
| Spec Standard | Mil-spec dimensions |
The kit includes a fire control group (hammer, trigger, disconnector, and associated springs and pins), bolt catch, magazine release, A2 pistol grip, billet trigger guard, and all remaining springs, detents, and pins needed to assemble a lower receiver.
Yes. All parts are built to mil-spec dimensions and are designed for AR-15 lower receivers.
You'll need an AR-15 lower receiver blank and, if you want a complete rifle, a buffer assembly kit and upper receiver. This kit handles the fire control and retention components only.
The kit includes an A2 grip and trigger guard, but because it's complete, you can use alternative grips and trigger guards designed for mil-spec AR-15 platforms if you prefer a different setup.
Kak Industry
The Kak AR-15 Lower Parts Kit Complete gives you everything you need to finish a lower receiver build in one box. This complete lower parts kit includes a mil-spec fire control group, bolt catch, magazine release, A2 pistol grip, billet trigger guard, and all the springs, detents, and pins required for assembly. It's 100% American made, which matters if you care where your components come from. Pair it with a buffer assembly kit and a lower receiver, and you've got a functional lower ready to go—no hunting through hardware bins or waiting on backorders for obscure fasteners.
KAK Industry builds these kits to mil-spec dimensions, so compatibility with standard AR-15 platforms is straightforward. Whether you're assembling your first AR or your fifth, having a complete lower parts kit eliminates guesswork and missing-part frustration. The included A2 grip and trigger guard get you started, but if you prefer a different grip angle, safety lever type, or trigger guard profile, you know going in what's included and what you can swap out.
Lower parts kits are one of those consumable categories where cheap often means headaches later. KAK's reputation in the AR platform is solid, and an American-made kit tends to hold tighter tolerances than imported alternatives—something you'll notice during assembly and throughout the life of the rifle.
| Brand | Kak Industry |
| Compatibility | AR-15 lower receiver |
| Grip Included | A2 pistol grip |
| Trigger Guard | Mil-spec billet trigger guard |
| Fire Control Group | Included |
| Manufacturing | 100% American made |
| Spec Standard | Mil-spec dimensions |
The kit includes a fire control group (hammer, trigger, disconnector, and associated springs and pins), bolt catch, magazine release, A2 pistol grip, billet trigger guard, and all remaining springs, detents, and pins needed to assemble a lower receiver.
Yes. All parts are built to mil-spec dimensions and are designed for AR-15 lower receivers.
You'll need an AR-15 lower receiver blank and, if you want a complete rifle, a buffer assembly kit and upper receiver. This kit handles the fire control and retention components only.
The kit includes an A2 grip and trigger guard, but because it's complete, you can use alternative grips and trigger guards designed for mil-spec AR-15 platforms if you prefer a different setup.
