The AR15 A2 buttstock is the classic fixed stock trusted by generations of shooters. Whether you’re building a clone-correct M16A2 rifle, replacing a worn stock, or upgrading from a collapsible carbine stock, the A2 provides unmatched stability, durability, and authentic retro style.

At Mounts Plus, we carry top-quality A2 buttstocks and kits from KAK Industry, Luth-AR, Hogue, and more — giving you reliable Mil-Spec options designed for AR15 platforms with rifle-length buffer systems.

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Why Choose an A2 Buttstock?

Unlike collapsible carbine stocks, the A2 fixed stock delivers:

• Rock-solid stability for precision shooting

• Consistent cheek weld for improved accuracy

• Durable Mil-Spec construction built to last

• Retro authenticity for clone builds and restorations

• Storage compartment in the buttplate for small tools or cleaning kits

For shooters who value tradition, comfort, and rugged reliability, the A2 remains one of the most popular AR15 stock upgrades.

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A1 vs A2 Buttstock – Key Differences

• Length: The A2 is roughly 5/8” longer than the A1, giving shooters an extended length of pull.

• Storage: The A2 includes a trapdoor storage compartment, while the A1 does not.

• Use Case: The A1 is correct for Vietnam-era rifles, while the A2 is standard on M16A2 and later models.

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A2 Buttstock Kits

Many of our A2 stock kits come complete with:

• A2 fixed rifle stock

• Rifle-length buffer tube

• Rifle buffer & spring

• Buttplate with trapdoor storage

• All mounting hardware

This makes it easy to convert your AR15 to a rifle-length fixed stock system without hunting down separate parts.

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FAQ – AR15 A2 Buttstock

Q: What rifles are A2 buttstocks compatible with?
A: A2 buttstocks are designed for AR15 rifles that use a rifle-length buffer system.

Q: What’s included in an A2 buttstock kit?
A: Most kits include an A2 fixed stock, rifle-length buffer tube, buffer, spring, and buttplate assembly.

Q: How does an A2 stock compare to an A1?
A: The A2 is longer and features a storage compartment, while the A1 is shorter and storage-free.

Q: Are A2 buttstocks Mil-Spec?
A: Yes. Quality A2 buttstocks are built to Mil-Spec standards for durability and compatibility.

Q: Can I use an A2 buttstock for a retro AR15 build?
A: Absolutely. The A2 stock is clone correct for M16A2 rifles and is a favorite among retro AR15 builders.

Q: Do I need a special buffer system for the A2 stock?
A: Yes. The A2 requires a rifle-length buffer tube and buffer system, which are included in complete stock kits.

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Final Thoughts

The AR15 A2 buttstock is more than just a piece of rifle furniture — it’s a proven design that offers stability, tradition, and authentic retro styling. Whether you’re building a clone-correct M16A2, upgrading your AR15, or simply prefer the durability of a fixed stock, the A2 remains a trusted option.

👉 Explore our selection of A2 buttstocks and kits today at Mounts Plus and finish your AR15 build with a stock that delivers both classic looks and modern reliability.

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