Description
The ArmaLite AR-10 Lower Receiver Complete is a ready-to-assemble lower receiver for building a .308/7.62 NATO caliber rifle. This complete unit comes assembled with a standard trigger group, pistol grip, and buttstock, providing the foundational component for a large-frame AR platform build. It’s designed for compatibility with the AR-10 pattern and is a core part for any custom rifle project.
Key Features
- Complete, ready-to-mate lower receiver assembly.
- Built for the .308 Winchester / 7.62 NATO cartridge.
- Includes standard mil-spec trigger, pistol grip, and buttstock.
- Mil-spec compatible for straightforward parts swapping.
- Drop-in ready for pairing with a compatible upper receiver.
Specifications & Details
| Specification | Detail |
|---|---|
| Caliber | .308 Winchester / 7.62 NATO |
| Receiver Material | 7075-T6 Aluminum |
| Finish | Type III Hardcoat Anodized |
| Trigger | Standard Mil-Spec Single Stage |
| Buttstock | 6-Position Collapsible |
| Fire Control | Semi-Auto (AR-10 Pattern) |
Here’s the thing—building a .308 AR can get expensive fast, but starting with a complete lower like this locks in a major cost. At $356.16, this ArmaLite unit represents a solid chunk of your build budget, but it’s one that saves you the hassle and potential tooling costs of assembling a lower from a stripped receiver. You’re paying for a factory-assembled, function-checked foundation. The weight of a complete lower like this typically falls around 3 to 3.5 pounds before adding an upper, giving you a sense of the heft of a full-size battle rifle platform.
Who This Lower Receiver Is For
This is for the budget-conscious builder who wants a proven starting point for a custom .308 rifle. It’s ideal if you want to avoid the small parts puzzle of a lower parts kit and prefer to invest your time and budget in selecting the upper receiver, barrel, and optic. It’s also a smart choice for those building a rifle compatible with the original ArmaLite pattern, which differs slightly from the more common DPMS pattern. This unit ships to Missouri and compliant US states, making it a straightforward start for local builders.
Pros & Cons: The Practical Tradeoffs
Pros: The biggest advantage is that it’s drop-in ready. No gunsmithing required to install pins, springs, or the trigger group—it’s all done. You get the reliability of a factory-assembled fire control group. Using the original ArmaLite pattern can offer compatibility with a wide range of dedicated uppers from brands like ArmaLite themselves or other manufacturers adhering to that spec. It simplifies your build process significantly.
Cons: The included mil-spec trigger is functional but not exceptional; many builders plan to upgrade it, which means you’re paying for a component you might replace. You must ensure your chosen upper receiver matches the ArmaLite AR-10 pattern, as it is not cross-compatible with the DPMS pattern without modification. The price point is an investment, though comparing it to the total cost of a stripped receiver, parts kit, grip, stock, and labor shows its value.
Frequently Asked Questions
Q: Is this lower compatible with any DPMS-pattern .308 upper receiver?
A: No, it is not. The ArmaLite AR-10 lower receiver follows the original ArmaLite pattern, which has key differences in the takedown pin and magazine catch geometry compared to the DPMS pattern. Always verify upper receiver compatibility before purchase.
Q: What magazines does this complete lower receiver use?
A: This lower is designed to use ArmaLite-pattern .308 magazines. These are often labeled as AR-10 magazines and are distinct from magazines for the DPMS LR-308 pattern. Using the correct magazine is crucial for reliable function, a detail that matters for both range use and hunting applications.
Q: Does this complete lower include a buffer tube and spring?
A: Yes, as a complete lower receiver, it includes the buffer tube, spring, and buffer weight necessary for operation. The listed 6-position collapsible stock is attached, so the lower is truly ready to mate with a compatible upper receiver assembly. Just remember, an FFL transfer is required for firearm purchases and receivers.
For the builder who wants to skip the fiddly bits and get straight to the heart of assembling a powerful, semi-auto .308 platform, this complete lower is a logical and value-focused starting point. It turns a complex project into a simpler two-part assembly. See if it fits your build plan at firearms-missouri.com.
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