Description
The CMMG 308 Stripped Lower Receiver, 308, For DPMS Mags Machined is the foundation for building your own large-frame AR-style rifle. It’s a precision-machined, serialized component that you legally transfer through an FFL, designed to mate with compatible .308/7.62x51mm upper receivers and accept standard DPMS-pattern magazines. This is where your custom .308 build starts, offering a solid, reliable platform you complete with your choice of parts kit, stock, and trigger.
I’ve built a few rifles on these, and the quality is consistently solid. The machining is clean, the anodizing is even, and the critical dimensions are spot-on. At $316.58, it’s a serious investment in a platform, but you’re paying for CMMG’s reputation for tight tolerances and a part that’s going to serve as the reliable backbone of a powerful rifle for years. It’s a straightforward piece of American machining.
Key Features
- Machined from 7075-T6 aluminum forgings for maximum strength and durability.
- Designed specifically for the .308 Winchester / 7.62x51mm NATO cartridge.
- Uses the widely available DPMS-pattern .308 magazines.
- Stripped configuration allows for complete customization of your lower parts kit, trigger, and stock.
- Mil-spec compatible for a wide range of aftermarket components.
- Precision machined to ensure proper fit with compatible .308 upper receivers.
Specifications & Details
| Specification | Detail |
|---|---|
| Caliber | .308 Winchester / 7.62x51mm NATO |
| Material | 7075-T6 Aluminum |
| Magazine Compatibility | DPMS-pattern .308 magazines |
| Finish | Type III Hardcoat Anodized |
| Receiver Pattern | Large-frame AR-10 / SR-25 style |
| Status | Stripped Lower Receiver (FFL Item) |
Here’s the thing—this isn’t a toy. It’s the registered, serialized heart of what will become a serious rifle. The weight, coming in from a forged 7075-T6 blank, gives you immediate confidence; this lower has the heft and rigidity needed for a .308’s higher pressure and recoil impulse. You’ll need a standard AR-15 armorer’s wrench and a set of roll pin punches to complete it, but the process is familiar to anyone who’s built a standard AR-15 lower. The real benefit is the DPMS magazine compatibility, which opens up a huge world of reliable, proven magazine options from brands like Magpul (PMAG® LR/SR GEN M3) and Lancer. That commonality is a huge advantage.
Who This Lower Receiver Is For
This stripped lower is for the builder who wants control. You’re not buying a complete rifle off the shelf; you’re assembling a tool to your exact specifications. It’s for the shooter who already has a favorite .308 upper in mind—maybe from Aero Precision or another reputable maker—and needs a rock-solid foundation. It’s also for the enthusiast who understands that the lower is the legally controlled part, and securing a quality one from a maker like CMMG is the first and most critical step in a long-term project. This part ships to Missouri and compliant US states, ready for you to start your build.
Pros & Cons
Pros: Excellent fit and finish from a trusted manufacturer. DPMS magazine compatibility is the most common and versatile standard. Built from tough 7075-T6 aluminum. The stripped format offers maximum customization potential. It’s essentially drop-in ready for a standard .308 lower parts kit—no gunsmithing required for assembly if you follow the instructions.
Cons: The price point is a commitment. As a stripped receiver, it requires additional investment in parts and tools to become functional. You must go through an FFL for the transfer. Compatibility is not universal across all .308 AR platforms; you must pair it with a DPMS-pattern upper.
Frequently Asked Questions
Q: Is this lower compatible with any .308 upper receiver?
A: No, it is not. The AR-10/.308 platform lacks a single universal standard. This CMMG lower is machined to the widely adopted DPMS pattern. You must pair it with a DPMS-pattern .308 upper receiver for proper fit and function. Always verify compatibility with your chosen upper before purchasing.
Q: What parts do I need to complete this into a functional lower?
A: You’ll need a .308 Lower Parts Kit (LPK), which includes the trigger, hammer, safety selector, magazine catch, and all springs and pins. You also need a buffer tube kit (tube, spring, buffer), a stock, and a pistol grip. These are all readily available from numerous aftermarket suppliers.
Q: Can I use standard AR-15 parts on this .308 lower?
A: Some small parts are interchangeable, like the safety selector and pistol grip. However, critical components like the takedown pins, bolt catch, magazine catch, and trigger pins are typically specific to the larger .308 platform. Always use a parts kit designed for a DPMS-pattern .308 lower to ensure proper function.
If you’re ready to start a .308 build on a proven, no-nonsense foundation, this CMMG stripped lower is available at firearms-missouri.com for Missouri residents and nationwide.
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