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The Luth-AR A2 Buttstock Kit is the straightforward way to set up a fixed rifle-length stock on your AR-15, whether you're finishing a fresh build or bringing an old-school profile back to a rifle you already own. Instead of hunting down a buffer tube, buffer, spring, spacer, and stock separately and hoping they all play nice together, you get a matched set in one box. It's the same classic profile that rode on the M16A2, and it's every bit as dependable now as it was then.
This is a rifle-length setup, so it uses the longer receiver extension rather than a carbine buffer tube. That matters because a rifle-length stock won't cycle right on a carbine system, and mixing the two is one of the most common headaches builders run into. Luth-AR takes that guesswork off the table by including the correct buffer, spring, and the aluminum spacer and longer top screw that the A2's extra length calls for. Everything is built to a mil-spec form factor, so it drops onto standard AR-15 lower receivers without any fuss.
The A2 runs a length of pull right around 13.5 inches, which suits most average and taller adults well and shines when you're settled in prone or shooting from a bladed stance. There's no wobble, no rattle, and no adjustment lever to work loose. You get a consistent shoulder pocket and cheek weld every single time, which is exactly what target and precision folks want out of a fixed stock. The hollow body also carries a foam-filled trap door in the buttplate, giving you a handy spot to stash a small cleaning kit or spare parts.
The stock is molded from tough polymer in a matte black finish that blends into just about any build, from a 20-inch retro clone to a modern rifle-gas setup. Luth-AR products are made in the USA, and this kit is a clean, budget-friendly path to a solid fixed stock without cutting corners on the parts that make it work.
The kit includes the A2 fixed buttstock, a rifle-length buffer tube, the buffer, the buffer spring, an aluminum spacer, and the mounting screw. It's a complete package, so you have every piece needed to assemble a rifle-length stock without sourcing parts separately. That's a big part of why builders like it for finishing a lower.
Yes, it's built to a standard mil-spec form factor and threads onto standard AR-15 lower receivers. Just keep in mind this is a rifle-length system, so it uses the longer buffer tube rather than a carbine tube. It's a natural fit for 20-inch rifle-gas and retro-style builds.
No, and you don't need to. A rifle-length stock requires the rifle buffer and spring included in this kit, and running a carbine buffer setup in a rifle tube won't cycle correctly. Everything you need for proper function is already in the box, so you're set out of the gate.
It does. The hollow body features a foam-filled trap door in the buttplate, giving you a spot to keep a small cleaning kit, batteries, or spare parts. It's a small touch that harks back to the original military design and still comes in handy at the range.
| UPC | 812058032519 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | BS-A2K |
| Color | Black |
| Model | |
| Product Type | Stock |
| Style | Fixed |
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