Upgrade or restore your AR-15 handguard setup with the CMMG Barrel Nut—a purpose-built mounting component engineered to properly secure compatible CMMG AR-15 free float handguards for a stable, repeatable, and reliable fit. The CMMG Barrel Nut Compatible with CMMG AR-15 Free Float Handguards (Part #55DA244 | UPC 815835017358) is an essential piece of hardware for builders, armorers, and shooters who want the right interface between the upper receiver and free-float rail system.
If you’re searching for a CMMG barrel nut, an AR-15 free float handguard barrel nut, or part number 55DA244, this component is designed to help ensure your handguard mounts correctly, stays tight, and performs as intended under real-world use.
What a Barrel Nut Does (And Why the Right One Matters)
In an AR-15 platform, the barrel nut is a critical part of the upper assembly. It provides the attachment point that secures the barrel to the upper receiver and often serves as the foundation for mounting a free float handguard. Using the correct barrel nut isn’t optional—it’s essential for proper alignment, safe assembly, and consistent performance.
A correct-fit barrel nut helps support:
Proper barrel retention and alignment at the upper receiver
Secure handguard mounting, minimizing movement or shifting
Repeatable accessory alignment for optics, lasers, and sights (when mounted to the rail)
Consistent handling and durability during training and field use
When builders try to mix incompatible barrel nuts and handguards, it can lead to poor fitment, misalignment, or hardware that loosens over time. Choosing the correct CMMG-compatible barrel nut is the simplest way to avoid those headaches.
Designed for Compatibility with CMMG AR-15 Free Float Handguards
This barrel nut is specifically listed as compatible with CMMG AR-15 free float handguards, making it a go-to replacement for anyone installing a CMMG rail system or replacing a missing or damaged part. Whether you’re refreshing a rifle after heavy use, rebuilding an upper, or completing a new assembly, having the correct barrel nut ensures the handguard mates properly and locks in the way it was designed to.
It’s a smart choice for:
AR-15 builders working on a CMMG free-float rail install
Shooters replacing worn, damaged, or lost mounting hardware
Armorers maintaining duty or training rifles that need dependable fitment
Anyone troubleshooting handguard looseness caused by incorrect hardware
Free Float Handguard Support: Stability You Can Feel
Free float handguards are popular because they isolate the barrel from pressure caused by grips, bipods, slings, and barricade contact. But the free-float advantage depends on a secure mounting interface. The barrel nut is a core part of that interface—meaning the right barrel nut helps ensure your handguard remains rigid, stable, and resistant to shifting.
That stability matters for:
Maintaining consistent zero for accessories mounted to the rail
Reducing unwanted flex during barricade shooting or supported positions
Reliable performance under heat during longer strings of fire
Keeping your build solid through travel, training, and hard use
Ideal for Builds, Repairs, and Maintenance Kits
Because barrel nuts are so central to handguard mounting, many experienced AR owners keep a spare on hand—especially if they frequently swap handguards or build multiple uppers. The CMMG Barrel Nut is a practical part to include in:
AR-15 build projects
Rail installation kits (for CMMG free float systems)
Armorer maintenance supplies
Replacement hardware stock for busy ranges or training programs
Product Identification (Search-Friendly Details)
If you’re searching by CMMG 55DA244 or UPC 815835017358, this is the correct product.
Why Choose the CMMG Barrel Nut (55DA244)?
When you’re installing or maintaining a CMMG AR-15 free float handguard, the barrel nut is the foundation of the entire rail interface. The CMMG Barrel Nut Compatible with CMMG AR-15 Free Float Handguards is the correct-fit solution for builders and shooters who want secure mounting, dependable alignment, and long-term stability from their upper assembly. It’s a small part with a big role—and the right choice when you want your AR-15 handguard setup done correctly.
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