Description
Picture this: you’re piecing together a hard-use rifle that bridges the gap between the ubiquitous AR-15 and the rugged 7.62x39mm cartridge. You need a foundation that’s purpose-built, not a compromised adaptation. That’s where the dedicated lower receiver comes in. The CMMG MK47 Lower, CTR, SSA is a complete, serialized lower receiver assembly designed specifically for the 7.62x39mm round. It accepts standard AK-47 magazines, mates with compatible MK47 or AR-15 upper receivers, and comes ready with a Magpul CTR stock and a Geissele SSA two-stage trigger. This isn’t an AR-15 lower with an adapter; it’s a dedicated platform engineered from the ground up for reliable, high-performance function with the intermediate-power cartridge.
When it comes to building a serious rifle for home defense or tactical use, reliability is non-negotiable. The core innovation of the CMMG MK47 Lower is its native compatibility with reliable, steel AK-47 pattern magazines. This eliminates the need for finicky magazine adapters that can be a point of failure. The lower’s geometry and magazine well are designed around the AK magazine’s robust profile, ensuring a solid lock-up and smooth feed path. It’s a solution that respects the proven reliability of the AK platform while granting you the ergonomic and modular advantages of the AR system. The complete assembly arrives with a premium Geissele SSA trigger installed—a massive upgrade over a standard mil-spec unit, providing a clean, predictable two-stage pull that enhances control. At $667.11, this package delivers significant value by bundling a high-end trigger and stock with the specialized lower.
The included Magpul CTR stock is a field-proven choice for a reason. It provides a solid cheek weld, features a friction-lock mechanism to eliminate wobble, and is built to withstand hard use. Paired with the Geissele SSA trigger, you have a control interface that is both rugged and refined. The lower itself is constructed from high-strength aluminum and features a standard AR-15 pistol grip thread, allowing you to install your preferred grip. This setup is drop-in ready for your chosen MK47-pattern upper receiver from CMMG or other manufacturers building to the same specification. Simply mate the upper and lower, insert a loaded AK magazine, and you’re operational. No gunsmithing, no fitting, just a direct path to a capable rifle.
| Specification | Detail |
|---|---|
| Model | CMMG MK47 Lower Receiver Assembly |
| Caliber Compatibility | 7.62x39mm |
| Magazine Compatibility | Standard AK-47 / AKM pattern magazines |
| Included Trigger | Geissele SSA Two-Stage |
| Included Stock | Magpul CTR Collapsible |
| Receiver Material | 7075-T6 Aluminum |
| Fire Control Group | Semi-Automatic (SA) |
Pros: Dedicated design for 7.62x39mm ensures superior reliability over adapted lowers. Comes fully assembled with top-tier Geissele SSA trigger and Magpul CTR stock, saving time and money. Uses abundant, proven AK-pattern magazines. Maintains familiar AR-15 manual of arms and ergonomics. A robust foundation for a duty-grade or defensive rifle.
Cons: Higher initial cost compared to a standard AR-15 lower. Limits you to the 7.62x39mm caliber ecosystem; you cannot switch to 5.56/.223 uppers. Requires a compatible MK47-pattern upper receiver, which may have fewer options than standard AR uppers.
So who is this for? This lower is for the shooter who demands a no-compromise 7.62x39mm AR-platform rifle. It’s for the builder who understands that magazine interface is critical and won’t trust an adapter. It’s ideal for a defensive rifle where terminal ballistics and reliable feeding are paramount, or for a tactical carbine meant for sustained use. If you’re looking to build a rifle that leverages the cost-effective, potent 7.62x39mm round in a platform you already know how to run, this is the cornerstone. This complete lower is available at firearms-missouri.com for Missouri residents and nationwide, with an FFL transfer required for firearm purchases.
Frequently Asked Questions
Q: Will this lower work with my standard 5.56 NATO AR-15 upper receiver?
A: No. The CMMG MK47 Lower is specifically designed for the 7.62x39mm cartridge and requires a compatible MK47-pattern upper receiver. The bolt, barrel, and ejection port dimensions are different from a standard 5.56 AR-15 upper.
Q: What AK magazines does it accept?
A: It is designed to work with standard, unmodified AK-47/AKM pattern magazines from various manufacturers like Magpul, US Palm, Bulgarian steel, and Serbian BHO mags. It typically does not accept proprietary or drum magazines without verification.
Q: Is the Geissele SSA trigger already installed?
A: Yes. The lower receiver arrives as a complete assembly with the Geissele SSA two-stage trigger, Magpul CTR stock, and a standard pistol grip installed and ready to mate with your upper. The hard part is already done for you.
Ready to build your definitive 7.62x39mm platform? Start with the right foundation.
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