Kak M16 A2 Rifle Buttstock Kit

The Kak M16 A2 rifle buttstock kit gives your AR-15 a classic, proven control setup without the guesswork of sourcing parts separately. If you're building or upgrading an AR-pattern rifle and want the reliability of an A2-style stock with the convenience of an all-in-one kit, this is a straightforward choice. Kak Industry, founded in 2011, focuses on American-made AR components at sensible prices—no unnecessary markup, just solid parts that work.

This kit includes everything you need for a complete rear assembly: the polymer A2 stock itself (which features a storage compartment for small items), the A2 extension tube, spacer, buffer, recoil spring, and assembly screw. It's the kind of setup you'd expect on a reliable duty rifle, scaled to civilian specs and modern production standards. Whether you're working on a new build, replacing worn hardware, or standardizing your rifle's ergonomics, having all the pieces together cuts down on hunting for compatible parts.

The polymer construction keeps weight down and cost reasonable, while the A2 profile remains popular for good reason: it's ergonomic, durable, and familiar to anyone with military or law enforcement rifle experience. The integrated storage compartment is handy for stashing a cleaning kit, spare parts, or batteries—practical for range days and field use alike.

Key Features

• Complete A2 buttstock kit—includes stock, tube, spacer, buffer, spring, and screw
• Polymer construction for durability and lightweight handling
• Integrated storage compartment in the stock
• American-made components from Kak Industry
• Straightforward assembly with all hardware included

Specifications

Frequently Asked Questions

What AR-15 platforms does this A2 buttstock kit fit?

This kit is designed for standard AR-15 rifles and compatible builds using a carbine-profile receiver extension. It does not fit non-AR platforms or rifles with different buffer tube standards.

What's included in the Kak M16 A2 kit?

The kit includes the polymer A2 stock, A2 extension tube, spacer, recoil buffer, recoil spring, and assembly screw—everything needed for a complete rear assembly installation.

Is this kit suitable for a new build or a replacement?

Yes. It works for both new builds (providing all rear-end components) and as a replacement for existing buttstock assemblies that need upgrading or repair.

Does the storage compartment hold standard items?

The integrated compartment in the A2 stock is sized for small items like cleaning patches, spare springs, batteries, or similar gear—practical for keeping essentials accessible on the rifle.