CMMG Replacement Magazine 10rd 6.5 Grendel / 6mm ARC – Black Stainless Steel, Fits AR-15 Platform 66AFC70
Upgrade your precision AR build with the CMMG Replacement Magazine 10rd 6.5 Grendel / 6mm ARC, a rugged, reliable, and purpose-built magazine designed specifically for shooters running modern intermediate calibers. Whether you’re dialing in at the range, hunting, or shooting long-distance steel, this 10-round stainless steel magazine delivers the consistent feeding and durability you need when running 6.5 Grendel or 6mm ARC in your AR-15 platform.
Engineered by CMMG, a trusted name in AR innovation, this magazine is designed to take full advantage of the ballistic performance of 6.5 Grendel and 6mm ARC while maintaining the familiar handling and ergonomics of the AR-15.
Built for 6.5 Grendel and 6mm ARC Performance
Running alternative calibers in an AR-15 demands magazines designed around those cartridges—not just modified 5.56 mags. The CMMG 10rd 6.5 Grendel / 6mm ARC Magazine is:
Purpose-built for 6.5 Grendel and 6mm ARC
Tuned internal geometry for reliable stacking and feeding
Ideal for shooters who value accuracy, consistency, and reliability at medium to long range
Whether you’re a hunter taking advantage of the hard-hitting 6.5 Grendel or a precision shooter leveraging the flat trajectory of 6mm ARC, this magazine helps the rifle run as it should.
10-Round Capacity – Perfect for Hunting, Bench, and Compliance
The 10-round capacity makes this CMMG magazine ideal for:
Hunting in states with round-count restrictions
Bench and prone shooting, where a shorter mag helps keep a low profile
Precision rifle work, reducing interference with bags, bipods, or barricades
Areas with magazine capacity laws where 10 rounds is the legal limit
Compact and efficient, the 10-round design improves handling while still giving you enough rounds for follow-up shots and practical use.
Durable Black Stainless Steel Construction
This CMMG Replacement Magazine is built from stainless steel, then finished in a tough black coating for a sleek, tactical look:
Stainless steel body provides strength and rigidity
Resistant to dings, dents, and deformation from drops or rough handling
Black finish offers extra corrosion resistance and a low-profile appearance
In the field or at the range, this mag is engineered to hold up to real use, not just sit on a bench.
Fits Standard AR-15 Platform
Designed to fit the AR-15 platform, this CMMG magazine works perfectly with:
AR-15 rifles and pistols chambered in 6.5 Grendel
AR-15 platforms chambered in 6mm ARC
Most standard AR-15 lower receivers that accept STANAG-style magazines
If you’ve built or bought a 6.5 Grendel or 6mm ARC AR, this magazine is an excellent OEM-style replacement or spare.
Reliable Feeding for Demanding Shooters
Reliability is everything when you’re behind the rifle. This CMMG 10rd magazine is designed for:
Consistent feeding with a variety of bullet shapes and weights
Smooth follower travel to minimize hang-ups
Stable spring tension for dependable performance over time
From slow, deliberate shots to faster strings on steel, you can trust this mag to keep feeding without issue.
Ideal for:
Hunters using 6.5 Grendel or 6mm ARC in their AR-15
Precision and long-range shooters who want a low-profile 10-round mag
Shooters in states with 10-round capacity restrictions
Anyone needing a reliable replacement or spare magazine for their CMMG or other AR-based Grendel/ARC rifle
Key Features – CMMG 10rd 6.5 Grendel / 6mm ARC Magazine (66AFC70)
Calibers: 6.5 Grendel / 6mm ARC
Capacity: 10 rounds
Material: Stainless steel
Finish: Black
Platform: Fits AR-15 platform rifles and pistols
Manufacturer: CMMG
Part Number: 66AFC70
UPC: 815835019543
Why Choose the CMMG Replacement Magazine 10rd 6.5 Grendel / 6mm ARC?
Purpose-built for modern calibers – Not a repurposed 5.56 mag, but tailored for 6.5 Grendel and 6mm ARC
Strong, dependable construction – Stainless steel body designed for real-world use
Perfect capacity for hunting and compliance – 10 rounds keeps you legal and low-profile
AR-15 compatibility – Drop-in fit for AR-15 platforms chambered in 6.5 Grendel or 6mm ARC
Backed by CMMG quality – Designed by a respected manufacturer in the AR world
Whether you’re building a new precision AR, outfitting a dedicated hunting rifle, or just need a reliable extra mag, the CMMG Replacement Magazine 10rd 6.5 Grendel / 6mm ARC Black Stainless Steel Fits AR-15 Platform 66AFC70 is a smart, dependable choice.
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