Precision machined from forged 7075 T6 aluminum, the CMMG Mk4 AR15 lower receiver is the quality mil-spec lower ready to be the foundation for your next build. The Mk4 stripped lower comes standard in your choice of seven Cerakote finishes and can be assembled using any mil-spec Lower Parts Kit. If you want to add some customization to your next AR build, consider upgrading to one of 10 different cerakote color options and pairing the Mk4 stripped lower with our Gunbuilder’s Lower Parts Kit and picking out the Trigger Guard, Pistol Grip, and Fire Control Group to make your project whatever you imagine.
Lower Receiver Assembly MK4/AR15 Coyote Tan
Transfer & restrictions
- FFL Transfer
- Required. Ships to a licensed dealer near you, never to your door. How it works
- At Pickup
- Background check (Form 4473) + photo ID, completed at your FFL.
- Your State
- Check what ships to your state
Specifications
- SKU
- 810097506480
- Brand
- CMMG
- Action
- Semi-Auto
- Frame Material
- Forged 7075 T6 Aluminum
- Country of Origin
- USA
- MFR Part #
- G55CA102CT
- UPC
- 810097506480
- Platform
- AR-15
How an FFL transfer works
Order online
Add to cart and check out like anything else. You pay securely up front.
Pick your FFL
Choose a licensed dealer near you. We ship the firearm to them — never to your door.
Complete the transfer
At pickup you fill out the ATF Form 4473 and pass the standard background check.
Take it home
Cleared? It’s yours — often the same day. That’s the whole process.
It’s simpler than it sounds — there’s no paperwork to handle before you get there.
Read the full FFL guide
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