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The UTG Model 4 A2 Fixed Stock Assembly brings the classic M16A2 rifle-length look and feel to your AR-15 build without the guesswork of sourcing parts separately. This is the full package: the A2 receiver extension tube, recoil spring, buffer assembly, stock spacer, and mounting screw all come together, so you're not hunting down loose pieces to finish the job. The stock itself is molded from impact-resistant advanced polymer, which is why folks tend to comment on the solid, no-rattle feel once it's mounted up.
The appeal of an A2 fixed stock is consistency. There's no wobble, no play, and no failure points that come with adjustable designs, which gives you a repeatable cheek weld every time you shoulder the rifle. That rock-solid contact point helps with sight alignment whether you're running irons or glass, and it's a big part of why the A2 profile has stayed in AR configurations for decades. The rifle-length buffer setup also does you a favor on recoil, spreading the impulse out over a longer stroke so it feels a touch softer than a carbine buffer.
Tucked into the back of the stock is a storage compartment sized right for a small cleaning kit, batteries, or odds and ends you'd rather keep with the gun. The matte black finish cuts glare and keeps things looking clean out on the range.
Installation is refreshingly simple since the assembly is essentially complete out of the box. It threads onto any standard AR-15 lower that's set up for a fixed stock, and most builders knock it out in a few minutes with basic tools. A tip worth passing along: if you want that ultra-snug fit against the receiver, a thin wrap of tape at the front of the stock is a trick some builders use to dial it in tight. For anyone chasing the traditional A2 rifle silhouette or just wanting the dependable feel of a fixed shoulder stock, this UTG kit checks the boxes without complicating the build.
Yes, this is a complete kit. It includes the A2 receiver extension tube, recoil spring, buffer assembly, stock spacer, and the mounting screw along with the stock itself. All you need to supply is a standard AR-15 lower set up for a fixed stock and a few basic tools.
It threads onto any standard AR-15 lower receiver that is configured for a fixed rifle-length stock. Keep in mind that fixed A2 hardware is not interchangeable with collapsible carbine stock components, since the tube, spring, and buffer are all rifle length. If your lower was built for a carbine buffer tube, this is a full swap rather than a drop-in stock change.
A fixed A2 stock gives you a rock-solid, repeatable cheek weld with no wobble or moving parts to work loose. That consistency helps with sight alignment and follow-up shots, and many builders simply prefer the classic rifle-length feel and look. The longer buffer system also tends to smooth out felt recoil a bit compared to a carbine setup.
There is a compartment built into the rear of the stock that opens up for storage. It is sized well for a compact cleaning kit, spare small parts, or other odds and ends you want to keep with the rifle. It is a handy touch that keeps essentials on hand without adding bulk.
| UPC | 4712274529861 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | RB-T469B |
| Color | Black |
| Length | 13.4500 |
| Model | |
| Product Type | Stock |
| Shipping Weight | 1.8375 |
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